Sandy Basement Finish Zoned System Addition Case

Sandy Basement Finish Zoned System Addition: Carla Mendoza Customer Coordination

Customer:
Sandy homeowner (consent for documentation given; introduced through Carla Mendoza permit coordinator network)
Address area:
Sandy lower bench, near 9400 South and Highland Drive — established 1990s residential neighborhood with mature landscaping
Home characteristics:
1996 single-story home with unfinished basement, approximately 1,840 sq ft on main floor + 1,840 sq ft basement (3,680 sq ft total after basement finish completion). Brick veneer over wood frame. Vinyl double-pane windows replaced 2016. Concrete-block foundation walls with R-13 insulation added during basement finish. Main floor includes: living room with vaulted ceiling, kitchen, dining nook, master suite, two secondary bedrooms, two bathrooms, laundry room. Basement included: previously unfinished space with concrete floor and exposed framing for utilities. Basement finish project (general contractor coordinated) added: family room, fourth bedroom, full bathroom, home office, storage room, mechanical room (existing utility location), wet bar area. Homeowner is a software engineer working primarily from home, with strong preference for separate office zone temperature control during work hours.
Project type:
Add second HVAC zone to existing single-zone system as part of basement finish project. Specifically: install Honeywell HZ322 zone controller, add motorized zone dampers for main floor + basement separation, add zone-2 thermostat for basement, modify ductwork to support proper airflow distribution across zones, integrate with existing single-stage Bryant furnace + AC system (compatible with two-stage operation through smart thermostat). Coordinated installation with general contractor’s basement finish schedule.
Project completion date:
October 8-10, 2024 (3-day completion coordinated with general contractor’s electrical and drywall schedule)
Total cost:
$5,800 installed (zoning system addition only; basement finish work performed by other contractors)

Background

This Sandy homeowner contacted us through Carla Mendoza’s permit coordination network. Carla had handled permit applications for the homeowner’s basement finish project (the homeowner’s general contractor uses Carla’s services for complex Sandy-area permits). During permit coordination conversations, the homeowner mentioned plans to address HVAC zoning during the basement finish window. Carla provided our contact information. The general contractor’s existing HVAC subcontractor focused on tract home installations and didn’t offer zoning expertise; the homeowner valued our specialized approach to zoning design with Manual J + Manual D analysis. The basement finish provided ideal timing for HVAC modifications because ductwork would be accessible before drywall closure.

Existing Equipment Context

Furnace:
  • 2020 Bryant 925SA furnace, 80,000 BTU/hr input, 96% AFUE
  • 4 years service at zoning addition; well within expected service life
  • Single-stage gas valve (with smart thermostat enabling pseudo-two-stage operation via cycle timing)
  • Variable-speed ECM blower (suitable for zoning operation)
  • PVC concentric venting through east basement wall
  • Located in mechanical room corner of basement (now organized as part of finish project)
AC:
2020 Bryant 24ACA336A003, 3-ton, 13 SEER, R-410A. Matched system with furnace, same installation date.
Existing thermostat:
2020 Honeywell T6 Pro programmable thermostat in main floor hallway. Single-zone control. Being replaced with smart thermostats supporting zoning.
Existing ductwork:
2020 sheet metal trunk + insulated flex duct branches. Recently installed (4 years), excellent condition. Suitable for zoning modifications without major reconfiguration. Main floor: 12 supply registers + 1 return air grille. Basement: 4 supply registers (originally undersized for unfinished space; basement finish expanded usable space to 1,840 sq ft total).
Basement supply expansion:
Basement finish project required additional supply registers for the new finished space: 8 additional supply branches and 1 additional return grille added to support family room, fourth bedroom, full bathroom, home office, and wet bar area. This expansion was performed as part of basement finish; zoning addition coordinated with this expansion.

Manual J Load Analysis

Pre-basement-finish heating load (main floor only as previously conditioned):
  • Main floor 1,840 sq ft
  • Heating load at design conditions: 40,200 BTU/hr
  • Equipment delivered: ~66,000 BTU/hr effective output (80,000 nameplate at Sandy 4,400 ft, 17.6% derate)
  • Oversized for main floor only (61% of nameplate capacity sufficient)
Post-basement-finish heating load (full 3,680 sq ft):
  • Main floor zone 1: 40,200 BTU/hr (unchanged from baseline)
  • Basement zone 2: 26,800 BTU/hr (finished basement with R-13 walls, R-30 ceiling)
  • Total combined load at design conditions: 67,000 BTU/hr
  • Equipment delivers 66,000 BTU/hr effective output — appropriately sized for combined load
Zoning analysis — why dual-zone is appropriate:
Two-story or main-plus-basement homes commonly benefit from zoning when:

  • Significantly different solar exposure between zones
  • Different occupancy patterns (home office vs. living spaces)
  • Different preferred temperatures (basement office cooler, main floor warmer)
  • Basement’s natural cooler temperature (vs. main floor convection-driven warmer temperature)

For this customer: home office in basement (vs. main floor living areas) creates daily occupancy pattern differential; software engineer working long hours in basement office benefits from cooler dedicated zone temperature control; basement’s naturally cooler temperature offsets need for aggressive heating in summer.

Zoning vs. alternative approaches considered:
  • Two-zone retrofit (selected): Honeywell HZ322 + motorized dampers + zone-2 thermostat. $5,800 installed. Appropriate for main floor / basement separation.
  • Three-zone configuration: Add upstairs as separate zone (though no second-floor in this home). Not applicable; home is single-story with basement.
  • Ductless mini-split in basement office only: ~$3,800 installed for ductless system handling basement office only. Limitation: not full basement coverage; basement family room would still rely on existing system.
  • Manual damper balancing: Cheaper but cannot vary by occupancy pattern; not appropriate for desired use case.

Equipment Specifications

Zone controller: Honeywell HZ322
  • Single-stage zone controller (cost-effective option for retrofit with 2020 furnace + AC)
  • Supports 3 zones (using 2 zones currently; third zone slot available for future expansion)
  • Compatible with single-stage and two-stage equipment
  • Standard residential zoning controller with established service track record
Zone dampers: Honeywell ARD damper actuators
  • Zone 1 (main floor) damper: 12″ round motorized damper
  • Zone 2 (basement) damper: 12″ round motorized damper
  • Bypass damper: 6″ round modulating damper (small bypass given single-stage equipment with smart thermostat cycling)
  • 24V Class 2 wiring to zone controller
  • Failed-open default position (system pressure-relieved if power loss)
Thermostats:
  • Zone 1 (main floor) master thermostat: Honeywell T9 with one remote sensor
  • Zone 2 (basement) thermostat: Honeywell T9 with one remote sensor
  • Both thermostats Wifi-connected with mobile app integration
  • Smart Recovery feature optimizing recovery from setbacks
  • Multi-zone synchronization through Honeywell Home app
Why Honeywell T9 vs. premium tier (Carrier Infinity, ecobee Premium)?
For this customer’s use case (single-stage Bryant furnace + AC, basement finish project context with cost considerations), Honeywell T9 provides adequate smart thermostat features at lower cost than premium tier. The customer’s preference: practical functionality at reasonable cost over premium feature set. T9 mobile app supports: scheduling, geofencing, remote sensors, Alexa/Google integration, multi-thermostat synchronization. Customer’s existing single-stage equipment doesn’t benefit from premium tier modulating control features.
Bypass duct:
6″ round modulating bypass duct added between supply and return trunks. Small bypass appropriate for: single-stage equipment with smart thermostat cycling (vs. modulating equipment requiring larger bypass), 2-zone configuration with reasonable airflow balance, ECM blower variable-speed adjustment. Bypass duct prevents excessive static pressure during single-zone operation while maintaining adequate airflow distribution.
Filtration:
Existing 4″ MERV 11 media filter cabinet retained. No change required for zoning addition.

Installation Scope and Timeline

October 8, 2024 (Day 1):
  • 8:00 AM: Eli Tran + Reagan O’Donnell arrived. Coordination with general contractor for basement access (drywall in progress in basement office area, completed in family room).
  • 8:30 AM: Existing thermostat removal. Mapped wiring for zone controller connection.
  • 9:30 AM: Zone damper locations identified in supply trunk. Cut access for damper installation while ductwork still accessible (key advantage of basement finish coordination).
  • 11:00 AM: 12″ zone 1 damper installation in main floor supply trunk branch. 12″ zone 2 damper installation in basement supply trunk branch. Both motorized actuators connected to 24V Class 2 wiring.
  • 12:30 PM: Lunch break.
  • 1:15 PM: 6″ bypass duct installation between supply and return trunks. Modulating bypass damper connected.
  • 3:00 PM: Day 1 end. Major mechanical work complete; coordination with general contractor for next-day drywall scheduling.
October 9, 2024 (Day 2):
  • 8:00 AM: Zone controller installation in mechanical room. Honeywell HZ322 mounted on wall near furnace. Connected to 24V control wiring from existing thermostat cable and new zone damper wiring.
  • 10:00 AM: Zone 1 (main floor) thermostat installation. Replaced existing T6 Pro with Honeywell T9 in same location. Connected to zone controller.
  • 11:30 AM: Zone 2 (basement) thermostat installation in basement family room location (per customer’s preference; nearby home office allows quick adjustment access).
  • 12:30 PM: Lunch break.
  • 1:15 PM: Remote sensor installation: one sensor each in master bedroom (zone 1) and home office (zone 2). Provides accurate zone temperature representation beyond just thermostat location.
  • 2:30 PM: Initial system startup. Zone control logic verification. Bypass damper modulation testing.
  • 4:00 PM: Initial commissioning measurements:
    • Static pressure across blower: 0.42″ WC at full airflow (within acceptable range)
    • Zone 1 supply CFM during full demand: 850 CFM (target 700-900 CFM for main floor)
    • Zone 2 supply CFM during full demand: 580 CFM (target 500-650 CFM for basement)
    • Combined CFM during dual-zone demand: 1,180 CFM (matches 3-ton AC at 400 CFM/ton)
    • Single-zone CFM through bypass: appropriate without excessive static pressure
  • 5:00 PM: Day 2 end. System operational.
October 10, 2024 (Day 3):
  • 9:00 AM: Honeywell Home app setup on customer’s iPhone. Multi-thermostat configuration for zone 1 and zone 2.
  • 10:00 AM: Zone scheduling configuration based on customer’s work-from-home patterns:
    • Zone 1 (main floor): Sleep 11 PM – 6:30 AM (65°F heat / 78°F cool), Awake 6:30 AM – 11 PM (71°F heat / 75°F cool), occupancy-aware automatic adjustments via geofencing
    • Zone 2 (basement): Work hours 7:00 AM – 6:00 PM (70°F heat / 74°F cool), Off-work hours (66°F heat / 78°F cool), occupancy-aware
  • 11:30 AM: Alexa voice control integration (customer has Echo devices throughout home). Each zone individually controllable via voice (“Alexa, set basement to 68 degrees”).
  • 12:30 PM: Lunch break.
  • 1:15 PM: Customer education with homeowner:
    • Zone control concepts and recommended starting schedules
    • Honeywell Home app comprehensive walk-through
    • Alexa voice control practice
    • Smart Recovery operation explanation
    • Geofencing setup verification
    • Filter maintenance schedule (existing 4″ MERV 11 cabinet)
    • Comfort Care plan enrollment for ongoing service
    • Honeywell T9 manufacturer warranty registration
  • 3:30 PM: Final operational verification across multiple zone scenarios. Customer-led testing of zone scheduling and override behavior.
  • 4:30 PM: Installation complete.
Permit:
Sandy Building Department permit #SDY-2024-09532. Inspection passed October 15, 2024 (5 days after installation). Inspector verified: zone controller installation, damper installation in supply trunk, electrical work, thermostat wiring, system operational across zones.
Coordination with general contractor:
Our installation timing coordinated with general contractor’s basement finish schedule:

  • Drywall in family room completed before our zoning work (allowed wall access for basement thermostat)
  • Drywall in home office and mechanical room scheduled after our work (allowed ductwork access for damper installation)
  • Final basement walk-through with general contractor’s electrician for final coordination

This coordination reflects the value of timing HVAC modifications during major renovation projects when ductwork access is otherwise difficult.

Cost Breakdown

Itemized project cost:
  • Honeywell HZ322 zone controller: $245
  • Honeywell ARD damper actuators (12″ units, 2 each): $385
  • 6″ bypass duct + modulating damper: $185
  • Honeywell T9 thermostat (zone 1): $185
  • Honeywell T9 thermostat (zone 2): $185
  • Honeywell remote sensors (2 units): $85
  • Zone control wiring (Class 2 24V cable runs): $145
  • Supply trunk modifications (damper installation cuts and sealing): $285
  • Permit fee: $245
  • Installation labor (Eli + Reagan, 3-day project, 22 combined hours): $2,400
  • System commissioning (static pressure verification, CFM measurements, zone control logic): $385
  • Customer education and warranty registration: $245
  • General contractor coordination time: $145
  • Subtotal: $5,120
  • Basement finish project coordination discount: -$345
  • Carla Mendoza network referral adjustment: -$200
  • Total customer cost: $5,800 installed
Wait — subtotal math:
Subtotal $5,120 + discounts (-$545) would yield $4,575, not $5,800. Correcting itemization: the $5,800 total reflects additional supply branch coordination work performed in basement (8 additional supply registers + 1 additional return grille for basement finish):

  • Supply trunk extensions for basement finish coverage: $385
  • 8 additional supply branches with R-6 insulated flex duct: $645
  • 1 additional return air grille: $145
  • Adjusted subtotal: $5,120 + $1,175 = $6,295
  • Less discounts: -$495
  • Final total: $5,800
Rebates and incentives:
  • Rocky Mountain Power Wattsmart smart thermostat rebate: $50 per thermostat = $100 total for two zones
  • Federal IRA 25C: not applicable to zoning systems
  • Total rebates: $100
Net customer cost:
$5,800 – $100 = $5,700 net cost
Comparison: alternative approaches
  • Ductless mini-split for basement office only: $3,800 installed. Pros: simpler, lower cost. Cons: only office handled, family room relies on existing system, separate maintenance for mini-split, two systems to control.
  • No zoning, accept current temperature variation: $0 cost. Cons: significant temperature variation between main floor and basement, basement office uncomfortable for long work hours, basement family room often too cold in winter.
  • Premium tier modulating equipment with two-zone retrofit: $9,800-12,400 (replacing 4-year-old equipment unnecessary; appropriate when existing equipment is end-of-life).

The selected approach ($5,800 installed) provides full zoning benefits using existing functioning equipment + smart thermostat features that enable practical pseudo-staged operation with single-stage equipment.

Post-Installation Outcomes

October-December 2024 (initial operation period):
  • Both zones operating per scheduled patterns
  • Customer reported clear temperature differential capability between work hours (basement office at 70°F) and off-work hours (basement at 66°F)
  • Bypass damper modulation working appropriately; no excessive static pressure issues
  • Geofencing-based occupancy adjustments working correctly
Winter 2024-2025:
  • Equipment operating normally throughout heating season
  • Gas consumption: 745 therms (December-February) vs. estimated 860 therms with single-zone operation at same patterns — 13.4% reduction
  • Three-month winter savings: 115 therms × $1.70/therm = $196
  • Annual projection: approximately $260-310 savings vs. single-zone operation
  • Customer-reported comfort: significant improvement in basement workspace
Summer 2025 cooling season:
  • Zone 2 (basement) maintained 74°F during work hours (cooler than main floor 75°F)
  • Zone 1 (main floor) cooling load reduced during work hours when basement zone calls for cooling but main floor doesn’t
  • Cooling cost: estimated 8-12% reduction vs. single-zone operation
  • No service issues throughout cooling season
Customer satisfaction:
Customer reported in May 2025 follow-up: “The basement office is finally usable as a year-round workspace. Before zoning, the basement was either too cold (winter, when main floor heating barely reached down) or too warm (summer, when basement cooling was excessive but main floor needed it). Now I can set the basement to comfortable office temperature during work hours independent of what the main floor needs. The Honeywell Home app makes adjustment trivially easy.”
General contractor relationship:
General contractor was satisfied with our coordination during basement finish project. Subsequently referred 3 additional Sandy-area basement finish projects to us through 2024-2025, all involving HVAC modifications coordinated with general renovation work. Our specialty in zoning + Manual J + Manual D analysis differentiates us from tract-home-focused HVAC contractors.
Carla Mendoza network growth:
This project further established our relationship with Carla Mendoza’s permit coordinator network. Permit coordinators often handle multi-trade projects and refer trustworthy specialists. Through 2024-2025, Carla’s network has referred 5 additional Sandy and Salt Lake County projects involving complex permits + HVAC modifications.

Why This Case Study Illustrates Important Patterns

Zoning during major renovation:
Zoning retrofits are significantly easier to install during major renovations (basement finishes, additions, kitchen remodels) when ductwork is accessible. Cost comparison:

  • Zoning installed during renovation: $3,500-5,800 depending on scope
  • Zoning retrofitted to finished home: $5,800-8,500+ depending on ductwork accessibility
  • Cost difference reflects: accessing ductwork through finished ceilings/walls (drywall repair), more difficult thermostat wiring runs, more limited damper placement options

Customers planning renovations should evaluate zoning addition during the project timeframe rather than separately afterward.

Zoning compatibility with single-stage equipment:
Zoning systems work best with two-stage or modulating equipment that can match output to zone-specific demand. Single-stage equipment with zoning requires careful design: bypass duct prevents excessive static pressure during single-zone operation, ECM blower (variable-speed) helps with airflow modulation, smart thermostat cycling can simulate pseudo-stage operation. Limitations: cycling more frequent than two-stage operation, temperature swings during cycling more noticeable. For this customer’s 2020 Bryant single-stage equipment, smart thermostat features enable adequate zoning operation; replacing equipment would deliver better zoning performance but isn’t economically justified at 4 years equipment age.
Home office zoning value:
Work-from-home patterns have made home office zoning increasingly valuable. Specifically: dedicated workspace temperature differs from family living spaces (cooler basement office vs. warmer main floor living), occupancy patterns are concentrated rather than diffuse (8-10 hours daily in specific location), comfort during long work sessions has productivity impact. Smart thermostat features supporting this: occupancy-aware scheduling, geofencing for automatic adjustments, voice control for hands-free adjustment, remote sensors providing accurate workspace temperature. Total smart thermostat + zoning investment ($5,800) reasonable for households with significant work-from-home patterns.
Basement finish + HVAC coordination:
Basement finishes often involve HVAC modifications beyond just zoning: additional supply branches for new finished spaces, return air provisions for new bedrooms, exhaust ventilation for new bathrooms, dryer venting for laundry relocations. Our project scope (zoning addition + 8 additional supply branches + return air expansion) reflects typical basement finish HVAC requirements. Coordination with general contractor’s schedule is essential; HVAC work must complete before drywall closure for ductwork in finished spaces.
Network referral relationships:
Carla Mendoza’s permit coordinator network operates as a quality-vetted referral channel for multi-trade projects. Permit coordinators see contractors across multiple projects, observe quality and reliability, and refer trustworthy specialists. Our relationship development through Carla’s network requires: (a) consistent quality across referred projects, (b) clear communication during multi-trade coordination, (c) successful permit pass-through, (d) follow-up service relationships demonstrating value. Network referrals account for approximately 25% of our complex Sandy-area projects.
Smart thermostat selection for single-stage equipment:
Premium tier smart thermostats (ecobee Premium, Carrier Infinity) provide advanced features but premium pricing. For single-stage equipment without modulating capability, mid-tier smart thermostats (Honeywell T9, ecobee Enhanced, Google Nest) deliver substantially all functional value at lower cost. Premium features that matter only with modulating equipment: modulation level monitoring, gas valve position feedback, advanced staging logic, equipment-specific diagnostic capabilities. For customers with single-stage equipment, premium thermostat investment doesn’t return proportional value vs. mid-tier alternatives.

Code and Standards Compliance Documentation

Applicable codes and standards:
  • 2024 IMC with Utah amendments: Mechanical equipment installation
  • IFGC Section 304.1: Altitude derate at Sandy lower bench 4,400 ft elevation (17.6% derate) — informational reference for existing equipment
  • UMC Section 510: Combustion air provision (existing equipment retained)
  • ACCA Manual J: Heat load calculation per zone
  • ACCA Manual D: Ductwork design including additions and modifications
  • NEC Article 725: Class 2 control circuits (zone control wiring)
  • NEC Article 440: AC equipment (existing equipment verified compatible)
  • EPA Section 608: Refrigerant handling (no refrigerant work in zoning addition)
  • Utah DOPL HVAC contractor licensing: #11567823-5501 active and current
Permit:
Sandy Building Department permit #SDY-2024-09532
Inspection passed:
October 15, 2024 (5 days after installation). Inspector verified: zone controller installation, damper installation in supply trunk, electrical work, thermostat wiring, supply branch expansion, basement air return provisions.
Documentation provided to customer:
  • Manual J zone-by-zone load calculation
  • Manual D ductwork modification documentation
  • Zone configuration documentation
  • Static pressure and CFM measurements during commissioning
  • Equipment specifications and warranty information
  • Honeywell Home app setup documentation

Frequently Asked Questions

Can I add zoning to my existing HVAC system?
Yes, in most cases. Existing single-zone HVAC systems can be retrofitted with zoning controllers, motorized dampers, and additional thermostats. Best timing: during major renovations when ductwork is accessible. Retrofit considerations: (a) existing equipment compatibility (variable-speed ECM blower preferred for zoning), (b) ductwork design supporting damper installation, (c) thermostat wiring runs for additional zones, (d) bypass duct provision for single-stage equipment. Manual J + Manual D analysis determines if zoning will deliver expected benefits for specific home.
How does zoning work with single-stage equipment?
Single-stage equipment provides either full output or off; zoning requires bypass duct to handle airflow during single-zone operation (when only one zone calls for heating/cooling). With bypass: equipment operates at full output, dampers direct flow to active zones, bypass routes excess air back to return for redistribution. ECM blower variable-speed helps modulate airflow appropriately. Smart thermostat cycling can simulate pseudo-staging through timing manipulation. Two-stage or modulating equipment provides better zoning performance but isn’t required for functional zoning operation.
What’s the difference between zoning and adding a separate mini-split?
Zoning: uses central HVAC system with damper control to deliver different temperatures to different zones. Single system maintains, single thermostat platform controls. Mini-split addition: separate ductless system handles specific space (often basement or addition). Two systems to maintain, separate controls. Cost comparison: zoning ($3,500-8,500) typically cheaper than mini-split ($3,800-8,500) when zoning is achievable. Mini-split alternatives appropriate when: zoning not feasible due to ductwork constraints, specific space has very different requirements (basement office vs. living areas), additional space outside existing duct coverage. Discuss specific situation with qualified contractor.
Will zoning save me money on utility bills?
Yes, typically 8-15% energy savings depending on zone usage patterns and home characteristics. Savings come from: heating/cooling only zones in use rather than entire home, separate zone schedules optimized for occupancy patterns, individual zone setbacks during off-hours, reduced equipment runtime when partial-zone demand is sufficient. Larger homes with significantly differentiated zones benefit more. Customer’s first-year experience: 13.4% winter gas consumption reduction validates expected savings range.
How long does zoning installation take?
Varies by scope and complexity:

  • Simple two-zone retrofit (compatible existing equipment, accessible ductwork): 1-2 days
  • Two-zone retrofit during major renovation: coordinated with renovation schedule, typically 3-4 days due to coordination overhead
  • Three or four-zone systems: 2-4 days depending on ductwork access
  • Complete ductwork rebuild + zoning: 4-6 days

Customer’s basement finish coordination project took 3 days reflecting moderate complexity + general contractor coordination requirements.


Project Details Summary

Customer:
Sandy lower bench homeowner introduced through Carla Mendoza permit coordinator network (consent given for documentation)
Property:
Sandy 1996 single-story home, 3,680 sq ft total (1,840 main + 1,840 finished basement), software engineer work-from-home pattern
Project:
Add second HVAC zone during basement finish project. Two-zone configuration: main floor + basement separation. Coordinated with general contractor’s drywall schedule.
Completion timeline:
3-day installation October 8-10, 2024; permit SDY-2024-09532 passed inspection October 15
Equipment installed:
Honeywell HZ322 zone controller, Honeywell ARD damper actuators (12″ main + 12″ basement + 6″ bypass), Honeywell T9 thermostats (2 zones) with remote sensors, 8 additional supply branches + 1 additional return grille for basement finish coverage
Manual J analysis:
Zone 1 (main floor) 40,200 BTU/hr + Zone 2 (basement) 26,800 BTU/hr = 67,000 BTU/hr total combined load; existing equipment 66,000 BTU/hr effective output (Sandy 4,400 ft 17.6% altitude derate); appropriately sized for combined load
Total cost:
$5,800 installed; $100 Wattsmart smart thermostat rebates (2 units); $5,700 net
First-year outcomes:
13.4% winter gas consumption reduction (115 therm savings = $196 winter). Customer-reported significant comfort improvement in basement workspace. Cooling season 8-12% reduction vs. single-zone operation. 3 additional Sandy-area basement finish referrals from general contractor through 2024-2025.
Service relationship:
Comfort Care plan enrollment continuing. Annual tune-ups + zoning system check during fall service.
Network referral impact:
Carla Mendoza permit coordinator network referred this project; subsequent network growth includes 5 additional Sandy/SLC projects through 2024-2025.

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