We're NexGen HVAC, a local heating and cooling crew serving the Denver metro. We install, repair and tune air conditioners, furnaces, heat pumps and mini-splits — and we quote every job in writing before we start.
Call (720) 948-5292, Mon–Sat 7AM–5PM. If your furnace quits in January or the AC dies in a July heat wave, we hold same-day slots for no-heat and no-cool calls.
No call centers, no pressure tactics. Just the repair-versus-replace math, shown side by side, so you can decide.
"Professional, on time with great pricing. I would recommend NexGen HVAC to anyone looking for quality work."
— CUSTOMER REVIEW · 5/5
"Mike has great work ethics. He treats his customers with respect and kindness. He does what he says he will do and helps you figure out how to save money if he can."
— CUSTOMER REVIEW · 5/5
"NexGen HVAC installed a rooftop unit for my business. Very reliable, very professional."
— CUSTOMER REVIEW · 5/5
The work, up close
Eight services, one standard: measured, quoted in writing, and tested before we leave.
Stock photo for illustration
Cooling
AC installation & repair
Right-sized central air with load calculations and ductwork checks in every bid. Capacitors, contactors, refrigerant leaks, frozen coils — most cooling failures diagnosed and fixed the same visit.
Year-round
Heat pumps
One system for heating and cooling, efficient through Colorado's mild shoulder seasons. Installed and serviced by our own crew.
Heating
Furnaces, installed & repaired
High-efficiency gas furnaces sized to the home. Repairs from ignitors to blower motors, with heat exchangers inspected for safety.
Targeted
Mini-splits & air quality
Ductless room-by-room comfort for additions, garages and finished basements. Plus filtration, humidity and ventilation upgrades for cleaner indoor air.
Controls
Smart thermostats
Installed and set up correctly — wired to your system, paired to your phone, programmed for real savings.
Questions, answered
How much does an AC tune-up cost?
Our cooling tune-up starts at $89 (Sample): coils, refrigerant charge, electrical and airflow, about 60–90 minutes on site.
Repair or replace?
If the repair costs more than half of a replacement and the system is over 12 years old, replacement usually wins. We show you both numbers side by side.
Which towns do you serve?
We're based in Aurora and cover the Denver metro: Denver, Boulder, Centennial, Lakewood, Littleton, Arvada and Parker.
How fast can you come out?
Same-day slots for no-heat and no-cool calls, Mon–Sat 7AM–5PM. Standard repairs usually within 1–2 days.
Do you guarantee the quote?
Yes — the price we quote is the price you pay. It's written, itemized and approved by you before work begins.
Get a free quote
Tell us what's going on — we call back during business hours with a time window and a flat number.
Demo form — submitting opens your email app. Prefer to talk? Call (720) 948-5292.
Licensed & insured
Full liability coverage on every job; credentials available on request.
