Duct cleaning
Whole-home duct cleaning so the system isn't blowing last year's dust. The job our stickers are built for — book it, we come out.
Request this serviceDenver Metro Area · Professional. Reliable. Local.
HVAC repair and duct cleaning for the Denver metro area.
Heating, cooling, and whole-home duct cleaning from HVAC System Repair. Professional. Reliable. Local.
- Denver Metro Area
- service area
- Duct cleaning
- whole-home
- Repair
- heat and cool
- 720-471-8705
- call for service
Duct cleaning
Call for service · 720-471-8705Services
Repair, replace only when it's honest — and clean the ducts.
Mon–Fri 8 AM–5 PM, emergency service available.
Air conditioning
Warm air, iced coils, dead capacitors. We diagnose the outdoor unit and get cooling back when Denver heat hits.
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Heating & furnaces
No heat at 9pm is a Front Range emergency. Igniters, inducers, and heat exchangers — repaired in place whenever it's safe.
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Heat pumps
Cold-climate and dual-fuel systems that have to work in a Denver January, not just a brochure.
Request this serviceHigh-efficiency gas furnaces
Replace an old standing-pilot or 80% furnace with a 96%+ AFUE condensing furnace. Compare Goodman, Trane and Amana.
High-efficiency gas furnaces
Tune-ups & filters
Seasonal visits so a cheap part doesn't take out the board. We leave the house cleaner than we found it.
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Emergency repair
System down and the house is uncomfortable? Call 720-471-8705. We service the Denver metro area.
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Furnace, AC and heat pump installation
New furnaces, central air, and heat pumps for Denver metro homes. Sized for the house, set in place, and started up.
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Duct work
New runs, repairs, and sealing so the air you paid to heat or cool actually reaches the rooms.
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Ductless mini-splits
Install and service ductless mini-splits — wall heads, line sets, and the outdoor unit.
Request this serviceWhat's wrong
Tell us what the house is doing.
Pick the closest symptom. We'll tell you what we usually find — then you can book the visit without describing it twice.
How it works
Three steps. No theater.
Step 1
You call. We show a window.
Emergency or same-day, you'll get a real arrival range — not 'the truck is somewhere.'
Step 2
Diagnose before we sell.
Gauges, meters, and a plain-language finding. You approve the repair before parts come off the truck.
Step 3
Fix it. Stand behind it.
Workmanship warranty on every repair. If it isn't right, we come back.
Duct cleaning
The job on the sticker. Booked for Denver metro area homes.
Service call
Repair visit
Quoteon-site
- Diagnose heating or cooling
- Plain-language finding
- Repair with your OK before parts come off the truck
Most requested
Duct cleaning
from $350
- Whole-home supply and return cleaning
- Register and grille wipe-down
- System run-check when we're done
- The job on our service stickers
Maintenance
Seasonal tune-up
Quoteper visit
- Full heating or cooling inspection
- Filter check and safety test
- Written findings, no pressure
DIY shop
Homeowner supplies. We send you to Amazon.
Filters, carbon monoxide detectors, a Nest thermostat, room purifiers, drain tablets, foil tape, and a line-set cover. Things you can actually do without a license. We do not sell capacitors, refrigerant, gas valves, or live electrical parts — if the job needs a wrench on the furnace, request service.
Ask the Shopping Helper
Answer 2 quick questions and get the right filter, CO detector, or thermostat.
As an Amazon Associate, HVAC System Repair earns from qualifying purchases. Links open Amazon. Prices and stock are Amazon's, not ours.
Common size. Swap every 1–3 months.
16×25×1 furnace filter
The size most Denver ranch homes take. Measure the one that's in there — a gap around a cheap filter just blows dust past it.
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DIY furnace filters / common sizes
Filterbuy MERV 8 16×25×1 4-pack
DIY furnace filters in the common 16×25×1 size. A four-pack so you are not hunting a filter every month.
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Pet & allergen filters
Filtrete 20×25×1 MERV 11 / MPR 1000 2-pack
Pet and allergen filters for a 20×25×1 return. Still measure the old one before you order.
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Thick media filters
Filterbuy 20×25×4 MERV 8 2-pack
Thick media filters for a 4-inch rack. Don't force a 1-inch filter into a 4-inch slot.
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Furnace filters
Filtrete 16x20x1 MERV 11, 2-pack
Start heating season with a clean filter. This covers the common 16x20x1 size.
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One near sleeping areas.
Kidde carbon monoxide detector
Furnaces and water heaters make carbon monoxide. A working battery detector is the first DIY item every house should have.
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Sleeping areas. Follow local code.
First Alert CO605 plug-in CO detector
Plug-in carbon monoxide alarm for sleeping areas. Follow local code on placement — one detector is not a whole-house plan.
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Smoke & CO
First Alert Battery Combination Smoke & CO Alarm
Fall is a good time to test your alarms. A combo unit covers both smoke and CO in one device.
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C-wire / compatibility
Google Nest Thermostat
A wall thermostat most Denver homes can run. Many furnaces need a C-wire for power — check compatibility before you pull the old one.
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Thermostats
ecobee Smart Thermostat Essential
Set a heating schedule for the season and stop heating an empty house.
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Thermostats
ecobee SmartSensor 2-Pack
For ecobee owners: room sensors help even out cold bedrooms by heating based on the rooms people are actually in. Works only with ecobee thermostats, not the Nest.
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Room purifiers
Levoit Core Mini air purifier
A small room purifier for a bedroom or office. It is not a furnace filter and it does not clean the ducts.
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Room purifiers
Levoit high-volume room air purifier
A larger room purifier when one room needs more airflow. Still a plug-in box — not whole-home filtration.
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DIY exterior finish
Mini-split line set cover 3 in × 13 ft
Covers the insulated lines on the outside of the house. Finish only — it does not replace a vacuum, charge, or 240-volt hookup.
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Outdoor unit
MODERN WAVE Top Cover for AC Units 36x36 (mesh)
A top-only mesh cover keeps leaves and hail off the outdoor unit over winter and still lets it breathe. We don't recommend full wraps.
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Doesn't replace a real drain flush.
Condensate pan tablets
Drop in the drain pan so algae doesn't clog the line and flood the closet. Power off before you open a panel.
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Look for UL 181 listed.
HVAC foil tape
Seals leaky flex and metal joints. Real foil HVAC tape — not the cloth roll from the junk drawer.
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Indoor evaporator only.
No-rinse coil cleaner
For a dirty indoor coil you can actually see. Power off, spray, leave it. If you have to pull the cabinet, that's our job.
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Doesn't replace duct cleaning.
Register & vent brush
Gets the last two feet at the grille. Handy between professional cleanings — it is not a whole-home duct cleaning.
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Dryer vent, not furnace ducts.
Holikme dryer vent cleaner kit (2-pack)
Vacuum hose attachment and a long flexible lint brush for the lint trap and the first stretch of dryer vent. Clean the lint trap every load. This is dryer venting — it is not HVAC duct cleaning.
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Unplug the dryer first.
Holikme 30 ft dryer vent brush kit
Flexible rods up to 30 feet with brush heads, by hand or on a drill, to push lint out of the dryer vent run to the outside hood. Go slow at elbows. Crushed, disconnected, or roof-vented runs are a service call.
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Power off at the disconnect.
Frost King ACF19 foam coil cleaner, 19 oz
Foaming AC coil cleaner for coils, fan blades, and reusable filters you can reach without pulling panels. No rinse needed. Turn the power off first. If you'd have to open the cabinet, that's our job.
View on AmazonHumidifier Care / Water Panels
Water panels
AprilAire 35 Water Panel, 2-pack
Put a fresh water panel in your whole-house humidifier before heating season so it can keep up with Colorado's dry winter air.
View on AmazonHumidity & Comfort
Humidity readout
TempPro TP50 Digital Hygrometer
A simple humidity readout helps you set your humidifier right for our dry climate, without overdoing it and fogging up the windows.
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Room humidifier
Levoit Top Fill Cool Mist Humidifier 2.5L
A bedroom humidifier adds comfort when the furnace is running. It's a room unit, not a whole-house system.
View on AmazonDrafts & Weatherproofing
Door drafts
Holikme Door Draft Stopper 41"
Sealing the gap under a drafty door keeps cold air out so the furnace doesn't work as hard on windy nights.
View on AmazonVents & Airflow
Vents & airflow
Magnetic Air Vent Deflector, 2-pack
Points warm air out from under furniture or drapes and into the room. Don't use it to fully block registers.
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Mini-splits, UV lights, and whole-home humidifiers aren't DIY. You buy the unit on Amazon — we hang it.
You buy, we installYou buy, we install
You pick the equipment. We hang it, wire it, and stand behind it.
Mini-splits, UV lights, whole-home humidifiers. Buy the unit on Amazon — we install it in the Denver metro area. Refrigerant, 240-volt, and water lines stay on us.
As an Amazon Associate, HVAC System Repair earns from qualifying purchases. Links open Amazon. Prices and stock are Amazon's, not ours.
We size, hang, vacuum, and charge.
Ductless mini-split
Garage, addition, or a room the ducts never reached. You buy the kit on Amazon — we hang the head, run the line set, vacuum, and charge it. Refrigerant and 240-volt are not DIY.
Coil-mounted. Not a table lamp.
HVAC UV light
A germicidal lamp at the indoor coil, not a gadget for the living room. UV-C is hard on eyes and skin — we mount it in the air handler and wire it on the right voltage.
Water line, drain, and bypass.
Whole-home humidifier
Bypass or fan-powered unit on the furnace — not a tabletop tank. Needs a saddle valve, a drain, and a bypass takeoff. We plumb it so it actually humidifies the house.
Rescue install
Already bought it? Stuck?
Amazon box in the garage. Indoor head on the wall, line set hanging. UV light still in the carton. We finish installs homeowners start — no lecture. Tell us what you bought and where it stopped.
Why us
Professional. Reliable. Local.
HVAC System Repair is a locally owned business, owned by Brenda Klepper.
Professional
Diagnose first, then repair. You get a clear finding before we sell a part — and we stand behind the work.
Reliable
You call 720-471-8705, we show up in the Denver metro area. Heating, cooling, and duct cleaning without the runaround.
Local
This is a Denver metro area shop, not a national call center. Same number on the sticker is the number that rings here.
Certifications & Training
- EPA Section 608 Universal Certified (all refrigerant equipment types)
- Factory-trained: Daikin North America, Amana S-Series Installation & Commissioning (2026)
- Completed: Xcel Energy Colorado Quality Installation Assessment, HVACRedu.net (2026)
- We keep learning, with new HVAC classes every year, so your system gets current best practices.
- Fully insured
- 25+ years in mechanical and refrigeration systems
Follow us
Lint Landing cartoons, quick HVAC tips, and what we're working on around the Denver metro.
What customers say
Had us out? A quick Google review helps your neighbors find an honest HVAC shop.
Service area
Serving the Denver metro area.
If your zip isn't listed, send it anyway — we cover the metro and nearby suburbs. Call 720-471-8705 to confirm.
- Denver
- Aurora
- Lakewood
- Arvada
- Westminster
- Thornton
- Centennial
- Highlands Ranch
- Parker
- Littleton
- Englewood
- Commerce City
- Broomfield
- Superior
- Firestone
- Brighton
- North Denver metro north of 136th Ave and I-25
This fall
Fall Heat Ready specials
Get cozy before the first real Denver cold snap. A little fall prep keeps the heat steady all winter.
$120
Furnace startup
from $350
Duct cleaning
from $375
Startup + duct cleaning combo
10% off
Humidifier or UV light installs
Offer ends November 1, 2026.
Request your fall visitWatch Our Videos
Quick furnace and AC fixes, plus a look at how we handle calls, from our YouTube and TikTok.
Furnace Fixes
Call Screening
AC & Cooling Troubleshooting
Latest on TikTok
Request
Tell us the house, the symptom, and the zip.
Dispatch calls or emails back to confirm a window. For a system that's already down, call 720-471-8705.
Questions
Straight answers.
Call for service