“I have had Grant here twice now to work on our very complicated system. Both times he (and his staff) have…”
Read full review on GoogleJeff Struck — 8/16/2026
Now in Fort Collins · 800 Stockton Ave #3 · Opens September 2026
Fort Collins HVAC,right in the middle.
Grants Heating & Air is opening at 800 Stockton Ave #3 — in the center of the Front Range towns we already serve — so we can take care of you better. Loveland, Windsor, Wellington, the mountains, and home. Honest diagnosis. No scare tactics.
No-heat & no-cool emergencies
A cold house with kids, or a house that won't cool in July — that's an emergency, not a ticket number.
Call or request service
Honest diagnosis
“Grant inspected the furnace, said it had a few more years in it, and all I needed was a new valve.” — Debbie Arnold
Read the full letters
Cold-climate heat pumps
Daikin FIT, dual-fuel, and rebate help for Xcel, Efficiency Works, and Colorado programs.
Heat pumps & rebates
Grants Heating & Air
5.0
141 Google reviews — open on Google
Nextdoor Neighborhood Fave · 5 years runningShop opening September 2026
800 Stockton Ave #3
Fort Collins, CO 80524
Right in the middle of where we work — so we can serve Fort Collins, Loveland, Windsor, Wellington, and the mountain towns better. Service calls don't wait on the doors. We still come to you.
We service all makes and models
Heating, cooling, hydronics, IAQ & maintenance
Heating
Gas furnaces, boilers, heat pumps, and all-electric systems sized for Colorado winters — including mountain homes that actually get cold.
Cooling
Central air, high-efficiency mini-splits, heat pumps, and evaporative cooling. We install what fits the house, not a package we need to move.
Heat pumps
Daikin FIT and other cold-climate systems, dual-fuel setups, and help with Xcel, Efficiency Works, and Colorado rebate paperwork.
Mini-splits & ductless
Single and multi-zone ductless for additions, older homes without ducts, and rooms the furnace never quite reaches.
Hydronics & water heaters
Cast-iron and high-efficiency boilers, radiant floors, zone pumps, tankless and indirect water heaters. Honest diagnosis before anyone talks replacement.
Indoor air quality
Humidifiers, filtration, and UV options (including REME Halo) so the system you already paid for actually treats the air.
Maintenance
Seasonal tune-ups, filter changes, and ServiceTitan reminders so the system does not sit until the coldest night of the year.
How we run the work
Professional software. Accurate loads. No guessing.
Grants HVAC uses ServiceTitan to run appointments and Conduit Tech with LiDAR for Manual J load calculations. That is the difference between a professional shop and a truck with a paper calendar.
Your appointment
ServiceTitan
We run the shop on ServiceTitan — the same software used by professional HVAC companies nationwide. You get a modern visit, not a clipboard and a maybe.
- Appointment reminders by text
- Technician photo so you know who is coming
- Live arrival time and truck tracking to your house
- Maintenance reminders for the next tune-up
- A clear record of the job when we leave
How we size the system
Conduit Tech
For replacements and new systems we scan the house with LiDAR in Conduit Tech, then run an ACCA Manual J load — room by room and for the whole home. That is how we pick capacity. We do not guess off square footage.
- LiDAR scan of the home on site
- ACCA Manual J heat loss and heat gain
- Room-by-room and whole-home calculations
- Right-sized equipment — not oversized, not short
- Reports that hold up for permits and rebates
Heat pumps
Rebates are running. The paperwork is ours to help with.
Cold-climate heat pumps (including Daikin FIT) and dual-fuel systems for Northern Colorado. Utility and state programs change — we confirm what you qualify for before you sign anything.
Xcel Energy
Up to $2,250 per ton
Heat pump programs for qualifying equipment and homes.
Efficiency Works
$1,500–$2,000
Local efficiency rebates — we help you check current amounts.
State of Colorado
Heat pump discount
State incentives stack with utility programs when you qualify.
No heat? Don't wait on a call center.
Mon–Fri 7:30 am – 5:30 pm. Weekends by appointment — emergency calls answered. Call the shop. Ask for Grant if you need the owner.
Service area
Based in Fort Collins. Built for the whole Front Range.
Stockton Ave puts us in the middle of the work — faster to you in Fort Collins, Loveland, Windsor, Wellington, Livermore, Timnath, Estes Park, Red Feather Lakes, Crystal Lakes, and the towns most shops skip.
Fort CollinsLovelandWindsorWellingtonLivermoreLaporteTimnathSeveranceJohnstownMillikenNunnEstes Park
All towns we serveHow a call actually goes
- 1. You call or write. The office gets you on the schedule. No call-center maze.
- 2. You get a heads-up. ServiceTitan sends a reminder, the tech's photo, and live tracking to your house.
- 3. We look at the equipment. Thorough evaluation before options. Written findings when it matters.
- 4. We tell you what we'd do in our own house. Repair if that's enough. Replace if it isn't. Nobody gets scared into a new system.