Alloy Heating and Cooling · Centennial, CO

AC and furnace repair in Centennial, CO

Repair, installation, and maintenance. Emergency dispatch after hours.

Local HVAC service in Centennial

Alloy Heating and Cooling is based in Centennial. If a furnace dies on a January night or the AC quits in July, a tech is coming from East Costilla Avenue, not from across the metro.

Southglenn ranch houses and newer builds along E-470 do not fail the same way. We see a lot of original 1970s furnaces still running on the west side, and builder-grade systems that are 12 to 15 years old on the east side.

What the weather does to systems here

Centennial sits on the Palmer Divide shoulder, so you get dry heat, sudden monsoon humidity, and overnight drops that ice coils if airflow is already weak. That mix is why we check filters, outdoor clearance, and refrigerant charge before talking replacement.

Housing we actually see in Centennial

Older Southglenn and Foxridge homes often have undersized returns and attics that cook in July. Piney Creek and Smoky Hill houses are newer but still get dust-clogged coils faster than owners expect because of Front Range dirt and cottonwood season.

HVAC repair

Most Centennial repair calls we run are no-cool days, short-cycling furnaces, and ignitors that fail after a cold snap. We diagnose on site, give a price before work starts, and honor the no-fix, no-pay rule.

Installation

If a Centennial system is past about 15 years, we size the replacement for altitude and the actual ductwork, not the builder sticker. That matters on split-level homes around Willow Creek where one floor always runs hotter.

Maintenance

A spring and fall tune-up here is not a courtesy wipe-down. We clean the outdoor coil, check charge, test safety switches, and catch the filter and drain issues that freeze units in June.

Emergency service

After-hours dispatch covers Centennial first because the shop is here. Call (720) 902-8778 and say you are in Centennial so the on-call tech routes correctly.

Neighborhoods in Centennial

Southglenn · Willow Creek · Foxridge · Piney Creek · Smoky Hill

Shop, phone, and hours

9940 East Costilla Avenue, Unit L, Centennial, CO 80122

(720) 902-8778 · contact@alloyhvac.com

Weekdays 8:00 a.m. to 6:00 p.m. Saturday 9:00 a.m. to 4:00 p.m. 24/7 emergency heating and cooling dispatch.

Centennial HVAC questions

Do you really work out of Centennial?
Yes. The shop is at 9940 East Costilla Avenue, Unit L, Centennial, CO 80122. Daytime calls in Centennial are usually the shortest drive we make.
How fast can you get to a Centennial AC or furnace repair?
On a normal weekday we often have same-day openings. Nights and weekends go to the on-call tech. We will give you a window when you call, not a vague "sometime today."
Do you service Southglenn and Piney Creek?
Yes. Southglenn, Willow Creek, Foxridge, Piney Creek, Smoky Hill, and the rest of the city limits are regular stops.

Nearby cities we also cover

Highlands RanchLittletonGreenwood Village

Need HVAC help in Centennial?

Schedule serviceCall (720) 902-8778