Cost Guide
HVAC Cost in Colorado
Average project costs in Colorado — get free estimates to compare local prices
| Service | Low | High |
|---|
| AC Repair | $150 | $650 |
| AC Replacement | $3000 | $9000 |
| Emergency AC Repair | $250 | $900 |
| Furnace Repair | $150 | $600 |
| Furnace Replacement | $2500 | $7500 |
| HVAC Installation | $5000 | $12000 |
| Duct Cleaning | $300 | $800 |
| HVAC Maintenance | $75 | $250 |
| Mini-Split Installation | $3000 | $8000 |
| Heat Pump Installation | $3500 | $8000 |
| Indoor Air Quality | $500 | $2500 |
| Smart Thermostat Install | $150 | $500 |
| Boiler Repair | $200 | $800 |
| HVAC Inspection | $75 | $200 |
| Commercial HVAC | $5000 | $25000 |
Costs vary by location, scope, and materials. Get free estimates for accurate local pricing.
FAQ
Reviewed by the HomeAdvisor.cc Editorial Team • Pricing data last reviewed July 2026
Commercial HVAC Systems | Small Business Installation and Maintenance
Common questions about HVAC in Colorado
How much does an HVAC system replacement cost in Colorado?
A typical central AC and heating system replacement in Colorado runs $5,500–$9,500 depending on your home's square footage and ductwork condition. Most Colorado homes use standard 3–5 ton systems; upgrading to a high-efficiency unit (16+ SEER) adds $1,500–$2,500 but qualifies for federal tax credits. Labor typically accounts for 40–50% of the total cost since robust installation practices are essential in hot, humid climates.
How long does an HVAC installation take?
A full system replacement in Colorado usually takes 1–2 days for removal and installation, though complex ductwork modifications can extend it to 3 days. If your existing ductwork is in good condition, the job can often be completed faster. Your contractor will schedule around your availability and give you a specific timeline during the initial walkthrough.
Do I need a permit for HVAC work in Colorado?
Yes, St. Clair County requires permits for any new HVAC installation or major replacement to ensure proper sizing and electrical connections. We handle all permit applications and inspections as part of our service—there's typically a $75–$150 county permit fee that we'll include in your quote. Skipping permits can cause issues with home inspections or insurance claims.
What should I expect during an HVAC maintenance visit?
A routine maintenance call in Colorado takes about 1 hour and includes cleaning the condenser coils, checking refrigerant levels, inspecting electrical connections, and replacing or cleaning filters. Spring tune-ups before cooling season and fall checks before heating season are recommended, since summers can be intense and winters bring unexpected freezes in some areas. Annual maintenance costs $150–$250 per visit and helps catch problems before they become expensive.
Why is my AC running constantly in Colorado summers?
Colorado's humidity and heat (often 90°F+ with high humidity) can tax undersized or poorly maintained systems into constant operation. Common culprits include dirty filters, low refrigerant, or a system that's simply too small for your square footage or insulation. We'll perform a free diagnostic to measure airflow and cooling capacity; if your system is undersized, replacement typically runs $5,500–$8,000.
Does your company carry liability insurance and warranties?
Reputable HVAC contractors are fully licensed, insured, and bonded. All new equipment comes with the manufacturer's warranty (typically 5–10 years on compressors), and quality contractors back their labor with a 2-year workmanship guarantee. Ask for proof of insurance before any work begins, which also protects you if something goes wrong.
How do I know if I need a new AC unit or just a repair?
If your system is over 12–15 years old, has an R-22 refrigerant leak, or requires repairs exceeding $2,000, replacement usually makes financial sense—especially in Colorado where units work hard year-round. We'll give you a full diagnostic with repair and replacement costs so you can make an informed decision. A new high-efficiency unit also qualifies for federal rebates, sometimes offsetting 10–15% of the cost.
What's the best temperature to set my thermostat to save money in Colorado?
In summer, setting your thermostat to 78°F when home and 82°F when away saves 10–15% on cooling costs in Colorado's climate. A programmable or smart thermostat pays for itself in one season and works especially well if your home has decent insulation and shade on the south side. Your HVAC contractor can recommend systems that integrate with your phone and help manage local humidity swings.
