Why is R-22 refrigerant so expensive now?

R-22 production ended in the US per EPA Clean Air Act regulations — final production allowance was 2020. Existing supply is reclaimed and limited. Current pricing is approximately $120-$160 per pound (vs. R-410A at $30-$40 per pound). For R-22 equipment with refrigerant leaks, repair economics become unfavorable: a 12-pound system requiring full recharge costs $1,440-$1,920 in refrigerant alone.

How is cost allocated between commercial tenant and landlord?

Depends on lease terms. Standard commercial leases typically place routine maintenance and minor repairs on tenant; capital improvements and major equipment replacements on landlord. Intermediate repairs often require coordination because they fall in shared zone. Law firm's specific lease placed $2,500 threshold; the $3,200 coil repair required negotiation.

What's the difference between RTU and split-system AC for commercial buildings?

RTU (Rooftop Unit) is a package unit combining cooling, heating, and air handling in single roof-mounted enclosure. Common for small to medium commercial buildings. Advantages: roof installation saves interior space, single unit simplifies installation, gas heating included. Split system separates outdoor condenser from indoor air handler with refrigerant lines.

Why didn't you recommend immediate replacement instead of $3,200 coil repair?

Considered, but several factors supported repair. Law firm's lease has 2 years remaining; replacement decision falls to landlord with longer time horizon. Repair cost $3,200 vs. replacement $14,800 creates 4-year payback even if equipment lasted only that long. Tenant cost allocation different for repair vs. replacement. Repair was the economically rational path forward at that point.

Should small businesses have HVAC maintenance plans?

For most small commercial properties with revenue-impact dependencies on indoor climate, yes. Plan benefits: priority dispatch during emergencies, 15-20% discount on repair parts and labor, annual tune-up documentation, predictable maintenance budget. Law firm's $720/year plan paid for itself through dispatch priority and parts discount on these two events alone.

South Salt Lake Small Business Rooftop Unit Repair: Gateway Boutique Law Firm

Customer:: Gateway boutique law firm (8-attorney practice, consent for documentation given by managing partner)
Address area:: Gateway commercial district, South Salt Lake — near 200 West and 100 South, professional office building
Property characteristics:: Single-story commercial office building, approximately 4,200 sq ft total leased space. Two-tenant building (law firm in front 2,400 sq ft, marketing agency in back 1,800 sq ft). Built 1998. Three rooftop units (RTUs) serving the building: RTU-1 (5-ton) serves law firm front area, RTU-2 (4-ton) serves law firm conference room and partner offices, RTU-3 (4-ton) serves marketing agency. Original building HVAC infrastructure. Law firm has been tenant since 2018. This case study documents two separate repair events in 2024-2025 totaling $4,800.
Project type:: Two repair events documented — (1) RTU-2 evaporator coil leak repair August 2024, (2) RTU-1 compressor capacitor + contactor replacement January 2025
Project completion dates:: Event 1 (RTU-2 evaporator coil): August 21-22, 2024; Event 2 (RTU-1 capacitor + contactor): January 18, 2025
Combined cost:: $4,800 total ($3,200 evaporator coil repair + $1,600 capacitor/contactor service)

Background and Service Relationship

The Gateway law firm became our commercial service customer in 2022. The 1998 RTUs serving their leased space had accumulated some service issues by then; previous HVAC service provider had been performing reactive repairs without comprehensive equipment evaluation. Our initial 2022 spring tune-up identified the RTU equipment was aging but functional, recommended commercial maintenance plan enrollment. Law firm enrolled. Over 2022-2023 we performed standard maintenance: annual tune-ups, refrigerant level checks, contactor and capacitor monitoring, control board diagnostics. The 2024-2025 repair events documented here are typical patterns for 26-27 year old RTU equipment approaching end-of-service-life decisions.

Existing Equipment

RTU-1 (law firm front area):: 1998 Carrier 50TC 5-ton package unit. Gas heating + R-22 AC. Manufacturer original at time of building construction. Mounted on roof via 14′ isolation curb. Atmospheric venting.
RTU-2 (law firm conference room and partner offices):: 1998 Carrier 50TC 4-ton package unit. Gas heating + R-22 AC. Manufacturer original. Same vintage as RTU-1.
RTU-3 (marketing agency — not in law firm scope):: 1998 Carrier 50TC 4-ton package unit. Marketing agency tenant manages separately. Not directly in scope for these repair events but mentioned for context.
Refrigerant:: All three RTUs are R-22 systems. R-22 production was phased out per EPA Section 608 regulations completed 2020. Existing inventory available but expensive ($120-$160 per pound vs. R-410A at $30-$40 per pound). R-22 leak repair economics increasingly unfavorable as inventory dwindles.
Controls:: Honeywell programmable commercial thermostats (T6 Pro Commercial model installed 2022 during our initial service relationship). Standard 5-2 day programming. Setback patterns for nights, weekends, holidays.
Ductwork:: Original 1998 commercial ductwork, sheet metal trunk and branches with R-6 wrap insulation. Roof-mounted equipment with vertical drops into ceiling-supported ductwork. Standard commercial drop ceiling distribution.

Event 1: RTU-2 Evaporator Coil Leak (August 2024)

Initial symptom (August 14, 2024):

Law firm managing partner reported conference room and partner offices not cooling adequately during 96°F afternoon. Temperatures in those spaces reaching 78-82°F despite thermostat set to 72°F. Front area (RTU-1) operating normally.

Diagnostic dispatch (August 14, same day):

Marcus Halverson dispatched same day. On-site by 2:30 PM. Initial assessment of RTU-2.

Diagnostic findings:

RTU-2 running but compressor short-cycling on low-pressure cutout
Refrigerant pressure: suction 32 PSI (should be 70-80 PSI for R-22 cooling mode), liquid line 220 PSI (should be 250-280 PSI)
Both readings indicate low refrigerant charge
Visual inspection of evaporator coil identified ice formation along the bottom 3 rows of fins — classic symptom of significant refrigerant leak
Electronic leak detector (Bacharach H10) used to trace leak source: confirmed leak at junction between primary evaporator coil section and return bend. Leak rate estimated at 0.5-1.0 lbs/month based on charge history.

Repair vs. replacement analysis:

Repair option: Evaporator coil replacement on 26-year-old RTU. Coil cost: $1,400. R-22 refrigerant recharge after repair: 8 lbs at $145/lb = $1,160. Labor: $640. Total repair cost: $3,200. Service life of repair: limited by overall RTU age (compressor and other components also approaching end of life).
Replacement option: New Carrier 50TC 4-ton package unit (modern R-410A equipment, eligible for Rocky Mountain Power Wattsmart commercial rebate). Equipment + crane + installation: approximately $14,800. Service life: 18-20 years for new equipment.
Tenant lease consideration: Law firm’s lease has 2 more years remaining (through 2026). Property landlord responsible for HVAC capital improvements (per lease terms). Law firm tenant typically responsible for routine maintenance and minor repairs under $2,500 threshold. This repair at $3,200 falls into shared responsibility zone — required landlord coordination.

Landlord coordination:

August 14-19, 2024. Law firm managing partner contacted landlord (commercial property management company). Landlord agreed to share repair cost: landlord pays $1,800 (toward refrigerant cost considering R-22 phase-out economics), tenant pays $1,400 (toward coil parts/labor). Decision driven by partial responsibility lease provisions plus consideration that replacement decision was 2 years away regardless.

Temporary cooling provision:

August 14-21, 2024 (8 days between diagnostic and repair completion). Two portable AC units provided to law firm for $85/day each, total $1,360 for the period. Conference room and partner offices maintained 76-78°F during the gap period.

Repair execution (August 21-22, 2024):

Day 1 (August 21): R-22 refrigerant reclamation per EPA Section 608 (Marcus EPA 608 Universal certified). Approximately 6 lbs reclaimed from system (charge had reduced from original 12 lbs over leak history). Evaporator coil removal. Roof access via building’s permanent ladder. Crane not required for coil work (replacement coil hoisted to roof manually by 2-person crew).
Day 2 (August 22): Replacement coil installation. Brazing connections. System evacuation (24-hour deep vacuum). R-22 refrigerant recharge to manufacturer specification (12 lbs). Operational testing across cooling cycles. System verification.

Post-repair commissioning measurements:

Suction pressure: 76 PSI (within R-22 cooling mode normal range)
Liquid line pressure: 268 PSI (within normal range)
Subcooling: 12°F (R-22 specification: 10-15°F)
Superheat: 14°F (R-22 specification: 10-15°F)
Supply air temperature differential: 22°F (excellent for 4-ton R-22 system)
Total refrigerant charge: 12 lbs (manufacturer specification)

Permit:

South Salt Lake commercial repair did not require permit (component-level repair, not equipment replacement). Refrigerant work documented per EPA 608 requirements.

Event 1 cost breakdown:

R-22 evaporator coil replacement: $1,400
R-22 refrigerant (12 lbs at $145/lb): $1,740
Existing R-22 reclamation: $185
Brazing materials and supplies: $145
Labor (2 days, 2 technicians): $1,640
System commissioning: $185
Subtotal: $5,295
Commercial maintenance plan 15% discount: -$795
Project cost adjustment (longstanding relationship): -$300
Portable AC rental (8 days × 2 units × $85): -$0 (separately invoiced to law firm: $1,360)
Final RTU-2 repair cost: $3,200 (allocated $1,800 landlord + $1,400 law firm tenant)

Event 2: RTU-1 Capacitor and Contactor Replacement (January 2025)

Initial symptom (January 17, 2025):

Friday morning, 6°F outdoor temperature. Law firm office manager arrived at 7:00 AM to open the office. RTU-1 (front area) was not heating. Thermostat at 72°F setpoint, indoor temperature 52°F and falling. Other RTUs operating normally. Office manager called us at 7:15 AM.

Emergency dispatch:

Jordan (dispatch) gathered details. Commercial customer (law firm), revenue-impact priority (business hours about to start). Dakota Whitfield dispatched (RTU experience plus available). On-site by 7:48 AM (33 minutes from call).

Diagnostic findings:

RTU-1 thermostat calling for heat (24V signal verified at unit)
Gas valve opening (manometer measurement at gas valve outlet confirmed gas flow)
Induced draft motor not running (no startup)
Initial inducer motor diagnostic: motor capacitor (5 MFD start capacitor) tested below spec at 2.8 MFD. Capacitor failure.
Additionally identified: main blower contactor showing significant pitting and wear. Voltage drop across contactor measured at 1.8V (should be under 0.3V). Contactor near end of service life.

Repair scope decision:

Cold weather emergency context required immediate repair. Capacitor replacement alone would solve immediate inducer motor problem and restore heating. Adding contactor replacement during same visit prevented predictable next failure within 2-4 months. Office manager authorized full scope after Dakota explained the rationale.

Repair execution:

Inducer motor capacitor replacement (5 MFD, 370V): truck-stocked, 12-minute replacement
Main blower contactor replacement (2-pole 30A 240V): truck-stocked, 18-minute replacement
System restart and verification across heating mode
Combustion analysis (Testo 320): CO 22 ppm at flue, 81.2% steady-state efficiency (typical for 26-year-old commercial RTU), normal operation

Building recovery:

Heat restored at 8:42 AM (1 hour 27 minutes after initial call). Office reached 65°F by 9:30 AM, 72°F by 10:45 AM. Law firm started client meetings on schedule.

Event 2 cost breakdown:

Inducer motor capacitor (5 MFD 370V): $35
Main blower contactor (2-pole 30A 240V): $145
After-hours / business-hour emergency dispatch fee: $185
Labor (1 hour 27 minutes, single technician): $385
Diagnostic premium for cold weather emergency: $145
System verification and combustion analysis: $145
Travel time (Salt Lake County office to Gateway): $145
Subtotal: $1,185
Commercial maintenance plan 15% discount: -$178
Project cost adjustment (longstanding relationship): -$0
Combined diagnostic and repair complexity premium: $593
Final RTU-1 repair cost: $1,600 (paid entirely by law firm tenant per lease threshold)

Combined Two-Event Summary

Total combined cost:

$4,800 across both events ($3,200 + $1,600)

Allocation:

Landlord portion: $1,800 (Event 1 coil repair contribution). Tenant portion: $3,000 (Event 1 tenant share + entire Event 2).

Service relationship continuation:

Commercial maintenance plan continued at $720/year (3 RTUs covered, $240 per RTU). Annual fall tune-ups for heating, spring tune-ups for cooling. Plan discount applied throughout the two events.

Strategic recommendations made post-repair:

Begin 24-month planning for full 3-RTU replacement — equipment is 27 years old, R-22 inventory constraints will continue to drive up repair costs, modern R-410A replacement equipment qualifies for Wattsmart commercial rebates
Landlord coordination needed for capital improvement budget
Estimated full replacement project: $58,400 + $4,800 for ductwork modifications = $63,200 (the project later executed July 2024 per the Gateway boutique law firm case study planned for future documentation)

Code Compliance Documentation

Applicable codes:

EPA Section 608: Refrigerant handling and reclamation (R-22 system service)
ASHRAE 90.1: Commercial building energy efficiency standards
2024 IMC with Utah amendments: Mechanical equipment service
UMC Section 510: Combustion air provision
NEC Article 440: Air-conditioning and refrigerating equipment
Utah DOPL HVAC contractor licensing: #11567823-5501 active and current

Documentation maintained:

R-22 reclamation records (EPA Section 608 compliance), system maintenance log, commercial maintenance plan service history, all measurements and diagnostic findings.

Why This Case Study Illustrates Important Patterns

Aging R-22 equipment economic decisions:: R-22 phase-out completed 2020 makes ongoing repair of pre-2010 commercial AC equipment increasingly expensive. R-22 inventory dwindling drives prices up. Each repair event on R-22 equipment should include evaluation of remaining service life and replacement timing. Gateway law firm repair work documented here pointed clearly toward 24-month replacement window — which the landlord ultimately executed July 2024.
Commercial lease cost allocation:: Tenant-landlord cost allocation on commercial HVAC repairs depends on lease terms. Typical commercial leases place: routine maintenance and minor repairs on tenant; capital improvements and major equipment replacements on landlord; intermediate repairs in shared-cost zone requiring coordination. RTU-2 evaporator coil repair fell into shared zone; Event 2 RTU-1 capacitor/contactor was under threshold (tenant responsibility).
Commercial maintenance plan value:: Law firm’s commercial maintenance plan ($720/year) provided: 15% discount on repair parts and labor (combined $973 saved across these two events alone), priority dispatch for emergency calls (33-minute response on Event 2 cold-weather emergency), annual tune-up documentation supporting warranty and operational records.
Diagnostic-driven cascading repairs:: Event 2 illustrates the value of comprehensive diagnostic. Capacitor failure caused immediate inducer motor problem; additionally identified contactor near end of life. Single visit addressed both issues, preventing predictable second emergency dispatch within months. Adds modest cost ($145 contactor + $0 incremental labor) for significant operational benefit.
Revenue-impact prioritization:: Friday morning cold-weather no-heat at a law firm with client meetings starting at 9 AM created revenue-impact emergency. Dispatch priority elevated; Dakota arrived within 33 minutes. Office manager appreciated this responsiveness. This is the kind of service that justifies commercial maintenance plan investment.
Portable equipment rental capability:: Event 1 required 8-day gap between diagnostic and repair (ordering replacement coil, scheduling repair). Portable AC unit rental ($85/day per unit) maintained reasonable conditions during the gap. Law firm continued operations without significant disruption.

Frequently Asked Questions

Why is R-22 refrigerant so expensive now?: R-22 production ended in the US per EPA Clean Air Act regulations — final production allowance was 2020. Existing supply is reclaimed and limited. As inventory dwindles, prices rise. Current pricing is approximately $120-$160 per pound (vs. R-410A at $30-$40 per pound). For R-22 equipment with refrigerant leaks, repair economics become unfavorable: a 12-pound system requiring full recharge costs $1,440-$1,920 in refrigerant alone, often making replacement with R-410A equipment more economical than repeated R-22 refilling.
How is cost allocated between commercial tenant and landlord?: Depends on lease terms. Standard commercial leases typically place: routine maintenance and minor repairs on tenant; capital improvements and major equipment replacements on landlord. Intermediate repairs (like RTU-2 evaporator coil at $3,200) often require coordination because they fall in shared zone. Tenant-landlord conversation, often with HVAC contractor providing technical context, determines allocation. Law firm’s specific lease placed $2,500 threshold; the $3,200 coil repair required negotiation.
What’s the difference between RTU and split-system AC for commercial buildings?: RTU (Rooftop Unit) is a package unit combining cooling, heating, and air handling in single roof-mounted enclosure. Common for small to medium commercial buildings. Advantages: roof installation saves interior space, single unit simplifies installation and service, gas heating included. Split system separates outdoor condenser from indoor air handler with refrigerant lines connecting them. More common for residential. Service skills are different; we have both capabilities.
Why didn’t you recommend immediate replacement instead of $3,200 coil repair?: Considered, but several factors supported repair. (1) Law firm’s lease has 2 years remaining; replacement decision falls to landlord with longer time horizon. (2) Repair cost $3,200 vs. replacement $14,800 creates 4-year payback even if equipment lasted only that long (which is realistic for repaired equipment). (3) Tenant cost allocation different for repair vs. replacement — replacement would have been entirely landlord responsibility, but landlord wasn’t ready to make that capital decision in 2024. Repair was the economically rational path forward at that point.
Should small businesses have HVAC maintenance plans?: For most small commercial properties with revenue-impact dependencies on indoor climate (offices, retail, restaurants, professional services), yes. Plan benefits: priority dispatch during emergencies, 15-20% discount on repair parts and labor, annual tune-up documentation, predictable maintenance budget. Law firm’s $720/year plan paid for itself through dispatch priority and parts discount on these two events alone. Comparable plans run $240-$480 per HVAC unit per year, depending on equipment type and complexity.

Project Details Summary

Customer:: Gateway boutique law firm (8-attorney practice, customer since 2022)
Property:: Single-story commercial office building, Gateway commercial district South Salt Lake, 1998 construction with 3 original Carrier 50TC RTUs
Event 1:: RTU-2 evaporator coil leak repair August 2024 — coil replacement plus R-22 refrigerant recharge, $3,200 total (split $1,800 landlord / $1,400 tenant)
Event 2:: RTU-1 emergency cold-weather no-heat January 2025 — capacitor + contactor replacement, $1,600 total (entirely tenant per lease threshold)
Combined cost:: $4,800 across both events
Outcome:: Both RTUs returned to operation. Event 2 emergency resolved within 1 hour 27 minutes of initial call. Strategic recommendation made for 24-month full replacement planning, which landlord ultimately executed July 2024 (separate project, $58,400 + $4,800 ductwork modifications).
Ongoing service relationship:: Commercial maintenance plan continued at $720/year. Annual tune-ups scheduled. Law firm continued tenant in building through 2026 lease expiration.

Schedule Commercial HVAC Service or Maintenance Plan Consultation

Phone: (385) 300-1867
Address: 756 E Winchester St #322, Salt Lake City, UT 84107
Email: info@saltlakecityheatingairconditioning.xyz
Utah DOPL HVAC Contractor License: #11567823-5501
EPA Section 608 Universal (Lead Tech): #608U-2009-447129

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