"Not only was Lou prompt and meticulous, but he also educated me on how the AC system works and the best way going forward to get the most out of my system. A+"
HVAC Maintenance & Tune-Ups in the Denver Metro
The most expensive HVAC repair is the emergency one at 2am in January. Most of those calls could have been prevented with a proper seasonal tune-up. At Lou's Heating & Cooling, a maintenance visit isn't a box-checking exercise. It's a real inspection by someone who knows what to look for. We check the things that fail, not just the things that are easy to test. At Denver's altitude, filters clog faster due to particulate, mountain dust, and wildfire smoke. We adjust our recommendations for Colorado conditions.
Signs You Need Maintenance Service
- It's been over a year since your last HVAC service
- Energy bills are creeping up without usage changes
- Your system is making new or louder sounds than before
- You're approaching the start of heating or cooling season
- Your equipment warranty requires annual maintenance to remain valid
What to Expect
- Schedule before the season
Book your furnace tune-up in fall (September-October) and AC tune-up in spring (April-May) before the rush.
- Full system inspection
We check every major component: heat exchanger, burners, igniter, capacitors, contactors, refrigerant charge, coil condition, blower motor, and filter status.
- Cleaning
We clean burners, flame sensors, drain lines, and coils as needed. Clean components run more efficiently and last longer.
- Report
We tell you what we found, what's in good shape, and what to watch. No upselling. If something needs attention, we'll tell you why.
- Filter recommendation
Denver's air quality (altitude, wildfire smoke seasons) means filters here should be changed every 60-90 days instead of the standard 90-120.
Our Commitment to You
Flat Rate Pricing
You get a price before we start any work. No hourly surprises, no hidden fees.
Free Estimates
Free in-home estimates on all installations. No obligation to move forward.
10-Year Warranty (New Equipment)
All new installations include a 10-year extended parts warranty plus our 5-year workmanship warranty.
24/7 Emergency Service
HVAC doesn't break on schedule. We answer calls around the clock.
What Our Customers Say
"Very direct, open and honest about cost, time and labor. He was on time and managed to repair our unit that had previously been repaired. We are very impressed with the quality of work, and effort he gave us. I would highly recommend his services."
Maintenance FAQs
How often should I tune up my HVAC?
Once per year for each system: furnace tune-up in fall (September-October), AC tune-up in spring (April-May). Annual service is also required by most manufacturers to keep parts warranties valid.
What's included in a tune-up?
Furnace: burner cleaning, igniter/flame-sensor check, blower test, gas pressure measurement, flue inspection, full cycle test. AC: refrigerant pressure check, coil inspection and cleaning, capacitor and contactor test, blower check, performance test. Detailed report at the end.
Do I really need annual maintenance?
Yes — emergency repairs cost 2-4× what a tune-up costs, and most breakdowns we see were preventable. In Denver's climate where systems run hard in both heating and cooling seasons, the math always favors maintenance.
Related Services
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