Same & Next-Day AC and Heating Repair in Longmont, CO
AC blowing warm air? Furnace won't fire? Connected Air Conditioning & Heating provides fast, affordable air conditioning and heating repair plus professional new system installation throughout Longmont, Colorado — with flat upfront pricing and no overtime fees.
- Same-day repair in Longmont
- 24/7 emergency dispatch
- Licensed, insured & EPA certified
- All brands serviced
- Parts stocked on every truck
- Free installation estimates
Your Longmont, Colorado Air Conditioning & Heating Company
Weather extremes and thousands of run hours are hard on air conditioners and furnaces around Longmont. Capacitors fail, coils freeze, refrigerant leaks, igniters burn out and blower motors seize. Connected Air Conditioning & Heating fixes all of it — same day AC repair in Longmont, heating and furnace repair, heat pump service, tune-ups and new HVAC installation in Longmont, CO.
Upfront pricing, licensed and insured technicians, and a written warranty on every repair.
Longmont sits in our Colorado service network, and local systems have a specific problem to fight: colorado's high-altitude swings — 90°f afternoons and freezing nights — mean your furnace and a/c often run the same week, so heat exchangers and igniters wear fast. Because those failures are predictable, our trucks carry the parts that break first here — which is how we finish most Longmont repairs in one visit. See our full Colorado coverage.
Same-day availability in Longmont is real, not marketing. Our dispatch board is built around drive time, so Longmont calls placed in the morning are usually completed the same afternoon, and after-hours emergency HVAC service in Longmont is dispatched around the clock at no extra charge.
HVAC Services We Provide in Longmont, CO
Repairs, replacements, installations and maintenance for homes and businesses across Longmont, Colorado — residential and commercial, same day whenever possible.
AC Repair in Longmont
24/7 same-day air conditioning repair on every brand — diagnosis, parts and repair in one visit.
Learn more →AC Installation in Longmont
New high-efficiency central air, heat pump and mini-split installation with free in-home load calculation.
Learn more →AC Replacement in Longmont
Straightforward system replacement with upfront pricing, efficiency comparisons and no scare tactics.
Learn more →Heating Repair in Longmont
Same-day heating repair on furnaces, heat pumps, boilers and electric systems — 24/7 in cold snaps.
Learn more →Furnace Repair in Longmont
Gas, electric and propane furnace repair with a free combustion and carbon monoxide safety check.
Learn more →Furnace Installation in Longmont
High-efficiency 95%+ AFUE furnace installation, correctly sized, vented and combustion-tested.
Learn more →Heat Pump Repair & Installation in Longmont
Heat pump diagnosis, repair and installation — defrost boards, reversing valves and full changeouts.
Learn more →Emergency HVAC Services in Longmont
Live 24-hour dispatch for no-cool and no-heat emergencies — nights, weekends and holidays.
Learn more →HVAC Maintenance & Tune-Up in Longmont
21-point precision tune-ups that cut energy bills, prevent breakdowns and protect your warranty.
Learn more →Duct Cleaning & Sealing in Longmont
Duct cleaning, leak sealing and repair — the fastest fix for hot rooms and high energy bills.
Learn more →Thermostat Installation in Longmont
Smart and programmable thermostat installation, wiring repair and zoning control setup.
Learn more →Indoor Air Quality in Longmont
Air purification, humidity control and filtration that measurably improves the air you breathe.
Learn more →Commercial HVAC in Longmont
Rooftop units, split systems and light commercial refrigeration serviced on your schedule.
Learn more →Fast, Honest, Warrantied HVAC Work
- Live 24/7 answering — a real dispatcher, not a voicemail box.
- Flat-rate written pricing approved before any work begins.
- Fully stocked trucks — capacitors, motors, igniters, boards, refrigerant.
- Complete diagnostics on electrical, refrigerant, airflow and safety controls.
- Every brand serviced in Longmont regardless of who installed it.
- Background-checked technicians in uniform and marked trucks.
- No overtime fees nights, weekends or holidays.
Same-Day HVAC Service in Four Simple Steps
No call centers, no vague all-day windows, no surprise invoices.
Call or Book Online
Describe the symptom. We narrow the likely cause on the phone and give you a realistic price range up front.
Two-Hour Arrival Window
You get a tight window and a text when your technician is en route — same day in most cases.
Full Diagnostic & Flat Quote
We test electrical, refrigerant, airflow and safety controls, then hand you a written flat price before touching a part.
Repaired & Warrantied
Trucks are stocked, so most repairs finish in one visit — then we verify performance and back it in writing.
What Longmont Customers Say
Rated 4.9 out of 5 across Google, Facebook and Yelp.
“Installed a smart thermostat and actually set up the schedule with me instead of just leaving it on the wall. Polite, clean, on time. Highly recommend to anyone in Longmont.”
Alicia T.Longmont, CO
“Our AC died at 9pm during a heat wave with a newborn in the house. Connected Air Conditioning & Heating had a tech at our door in Longmont before 11pm, replaced the capacitor and had us cooling again that night. No overtime charge either.”
Marcus D.Longmont, CO
“Best air conditioning repair in Longmont, hands down. Three companies quoted a full system replacement. These guys found a bad contactor, fixed it for a couple hundred dollars, and told me the system had years left. Honest people.”
Danielle R.Longmont, CO
Serving Longmont, Colorado and Nearby Towns
Mobile HVAC service throughout Longmont and the surrounding area — we come to you.
Nearby Cities We Also Serve
AC & Heating Repair in Longmont — Common Questions
How fast can you get to my home in Longmont?
How much does AC repair cost in Longmont, CO?
Do you offer 24 hour emergency HVAC services in Longmont?
Do you install new AC and heating systems in Longmont, Colorado?
My AC is blowing warm air in Longmont. What should I check first?
What HVAC brands do you service in Longmont?
Do you serve areas outside Longmont?
Why do air conditioners fail so often in Colorado?
No Cooling or No Heat in Longmont, CO? We Can Usually Be There Today.
Free phone estimates, flat-rate pricing approved before we start, and absolutely no overtime charges on nights, weekends or holidays. Emergency HVAC services in Longmont, CO answered 24/7 by a real person.
☎ (877) 493-6975Call Now — 24/7 Dispatch Request a Free Quote