Hire a Colorado-licensed HVAC contractor on Sullix
Colorado's swing seasons demand sized-right systems. Sullix connects you with NATE-certified HVAC contractors for furnace, AC, heat-pump, and full new-construction load-calculated installs.
What Sullix-vetted hvac crews handle
Common scopes covered by Colorado contractors quoting on Sullix. Post once and receive competitive bids from verified pros in your area.
Furnace & AC replacement
High-efficiency 96%+ AFUE furnaces and right-sized ACs (often smaller than your old unit) sized via Manual J load calculation.
Heat pumps & dual-fuel systems
Cold-climate heat pumps and dual-fuel hybrid systems suited to Colorado's wide winter swings, with utility rebate paperwork handled.
Ductless mini-splits & new construction
Mini-split installs for ADUs and remodels, plus full new-construction equipment, ductwork, and load-calc design.
Why hire hvac contractors through Sullix
Verified license & insurance
Every contractor's Colorado license and liability insurance is checked at onboarding and re-validated monthly.
Milestone-based escrow
Payments stay in escrow and release as milestones complete — no large upfront deposits, no "pay everything before work starts."
Documented scope & change orders
Every bid, contract, and change order is timestamped and stored in your project workspace — clean documentation if anything goes sideways.
Frequently asked questions
How much does a new furnace cost in Colorado?
A high-efficiency 80,000–100,000 BTU gas furnace installed in Colorado averages $4,500–$8,500. Dual-stage or modulating systems with smart thermostats and zone control can range from $8,000 to $14,000.
Is a heat pump worth it in Colorado?
Modern cold-climate heat pumps perform well down to ~5°F and are increasingly cost-effective in Colorado, especially with Xcel rebates. Dual-fuel setups (heat pump + gas backup) are common in mountain and Front Range climates.
How long does HVAC installation take?
Standard furnace or AC replacement is typically a 1-day job. Full system replacement with new ductwork or zoning can take 2–5 days. New construction installs run alongside the rest of the build.