Fast, Reliable Air Quality & Ventilation Across Boulder
Air quality and ventilation work in Boulder runs $300-$5,000 depending on whether you’re adding filtration to an existing system or retrofitting ERV/HRV into older ductwork. Most jobs we handle in the 80321, 80322, 80323, and 80328 ZIP codes are completed in a single visit, and our technicians are familiar with the altitude-derated equipment and SmartRegs requirements specific to Boulder homes. Call (866) 561-3358 anytime - a live person answers, day or night.
We’ve been sending crews to Boulder since the mid-1980s, long before the current building codes took shape. That means we’ve worked on the original gravity furnaces in University Hill rentals, the 1950s ductwork in Whittier, and the converted evaporative coolers in Table Mesa homes that still cool with swamp-cooler grilles. Boulder isn’t Denver, and it isn’t the plains. The Flatirons create pressure patterns, the elevation changes how equipment performs, and the housing stock carries quirks you don’t find in newer suburbs. We know those quirks because we’ve solved them.
Why Fireside Heating & Air Co. Is Boulder’s Preferred Air Quality & Ventilation Company
Homeowners in Boulder call us back because we quote the job honestly and stand behind it. Our 90-Day Done Right Promise means if something isn’t right, we make it right - in writing, no paperwork, no arguing. That’s been our way for over 8 years.
We answer the phone with a live person, 24 hours a day, every day of the year. At 2 a.m. during a Chinook wind event when your furnace is cycling hard and you’re worried about the heat exchanger, you’ll talk to someone who can dispatch help - not a voicemail tree.
Our technicians are background-checked, uniformed journeymen trained on nine major brands including Carrier, Trane, and Bryant. They put on shoe covers without being asked. They treat your home the way they’d treat their mother’s.
We’ve built relationships with suppliers along the Front Range that let us source parts fast for Boulder customers. That matters when you’re dealing with a SmartRegs deadline or a heat exchanger crack during a cold snap.
Our Air Quality & Ventilation Services in Boulder
ERV/HRV System Installation
Boulder’s mountain-front location makes energy recovery ventilation especially valuable - and especially tricky. The altitude means lower air density, so airflow calculations differ from sea-level specs. We size and install ERV and HRV systems that account for Boulder’s 5,430-foot elevation, ensuring you get the heat and moisture transfer you paid for. For older homes on University Hill and in Whittier with original gravity furnaces and no return-air pathways, we design creative duct solutions that satisfy SmartRegs without gutting the house. A typical ERV/HRV install in Boulder runs $2,500-$5,000.
We replaced a failing 1970s evaporative cooler with a ducted ERV system on a 1950s rental on Mapleton Hill. The original ductwork had no return-air path, so we had to core through unheated crawlspace and install a dedicated return chase - a $4,200 job that saved the landlord from a SmartRegs violation while maintaining the home’s low-humidity comfort during Chinook events.
Air Filtration System Upgrades
The Flatirons’ dry air and Boulder’s 300-plus days of sun create a dust problem that standard one-inch filters can’t handle. Original gravity furnaces on University Hill lack ductwork designed for modern air filtration, causing high static pressure and filter bypass that leads to dust accumulation throughout the home. We upgrade to media cabinets and sealed return systems that actually capture particles instead of bypassing them. An air filtration system upgrade in Boulder typically costs $300-$1,500 depending on whether we’re retrofitting into existing ductwork or building from scratch.
Ventilation Installation
Chinook wind-driven pressure swings pull unfiltered attic and basement air through unsealed return ducts in Whittier rentals, spiking particulate levels during spring gusts. We install dedicated ventilation systems with sealed ductwork and proper barometric dampers that prevent backdrafting during pressure events. For homes converting legacy evaporative coolers to refrigerant AC, we often find undersized return grilles that starve the system of air, causing freeze-ups and short cycling in Boulder’s low-humidity summers. Our ventilation installs correct these airflow problems at the source.
UV Air Purifier Installation
Boulder’s spring pollen season hits hard, and wildfire smoke from the west has become a recurring summer problem. UV-C air purifiers installed in the ductwork neutralize biological contaminants and can reduce the load on your filtration media. We size UV systems for Boulder’s altitude-aware airflow rates, not sea-level specs, and position them where they’ll see consistent exposure without creating ozone. For homes with forced-air systems, this is often the most cost-effective air quality upgrade we offer.
Humidifier and Dehumidifier Installation
Boulder’s low relative humidity means most homes need humidification, not dehumidification, for much of the year. But converted evaporative cooler homes sometimes have moisture problems in basements, and tightly sealed new construction can trap humidity. We install whole-house humidifiers that integrate with your furnace controls and dehumidifiers for problem zones. Our technicians know the difference between a home that needs humidity and one that has a moisture intrusion problem - we won’t sell you what you don’t need.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Boulder
We carry parts and train our technicians on nine major residential brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. For Boulder customers, that means faster repairs and fewer return trips. We don’t have to order a Bryant media cabinet or a Trane ERV core from out of state - we source from regional distributors who stock altitude-rated components. When your SmartRegs inspection is next week and you need a specific part, that local supply chain matters.
Common Air Quality & Ventilation Problems We See in Boulder Homes
- Original gravity furnaces with no return-air pathways. University Hill and Whittier rentals built in the 1950s-1970s often have gravity or floor-mounted furnaces never designed for modern zoning. Adding air filtration or ventilation to these systems requires creative duct redesign that standard suburban installs don’t need.
- Filter bypass from high static pressure. When homeowners or landlords slap a high-MERV filter onto undersized ductwork, the system pulls air around the filter instead of through it. In Boulder’s dusty, dry air, that means dust accumulation on coils and in living spaces.
- Unsealed return ducts pulling attic and basement air. Chinook winds create pressure differentials that expose every leak in your duct system. We find return ducts in older Boulder homes drawing unfiltered air from crawlspaces and attics, especially in the 80302 and 80304 areas near the foothills.
- Legacy evaporative cooler conversions with undersized returns. Many pre-1990 Boulder homes used swamp coolers, and the conversion to refrigerant AC often leaves the original small grilles in place. That starves the system, causes freeze-ups, and reduces air changes to the point that indoor air quality suffers.
Heating and Cooling in Boulder, Done Right
Denver Metro winters start sharp and summers climb fast. Your furnace works hard at altitude, and that first heat wave tests every builder-grade AC that came with the tract house. Fireside keeps Boulder homes steady through both, with journeymen who size the fix honestly, tape the boot seams, and leave the thermostat where they found it.
We named this company for the warmest word in the American memory because that’s the feeling we deliver, backed by our 90-Day Done Right Promise in writing. we coordinate through our Denver Metro service area Same-day service when the season turns. Ask about our $89 seasonal tune-up.
Heating & Cooling in Boulder
Colorado’s altitude swings and dry winters punish furnaces hard, then the first June heat wave tests every AC that sat idle for eight months. We see it every season: builder-grade units in tract housing aging past their design life, coils clogged from cottonwood season, no-heat calls at 2 a.m. when the temperature drops forty degrees overnight. Our techs are licensed, insured journeymen who give you honest math on repair versus replace, put on shoe covers without being asked, and leave the price where you can read it. we coordinate through our Denver Metro service area
Ask about our $89 seasonal tune-up. Catch the problem before the cold front does.
Heating & Cooling in Boulder
Colorado’s altitude swings and dry winters punish furnaces hard, then the first June heat wave tests every AC that sat idle for eight months. We see it every season: builder-grade units in tract housing aging past their design life, coils clogged from cottonwood season, no-heat calls at 2 a.m. when the temperature drops forty degrees overnight. Our techs are licensed, insured journeymen who give you honest math on repair versus replace, put on shoe covers without being asked, and leave the price where you can read it. we coordinate through our Denver Metro service area
Ask about our $89 seasonal tune-up. Catch the problem before the cold front does.
Pricing for Air Quality & Ventilation in Boulder, CO
We’re plainspoken about what things cost. Here’s what air quality and ventilation work runs in Boulder:
| Service | Typical Range in Boulder |
|---|---|
| ERV/HRV System Installation | $2,500 - $5,000 |
| Air Filtration System Upgrade | $300 - $1,500 |
| UV Air Purifier Installation | $400 - $1,200 |
| Whole-House Humidifier Install | $350 - $900 |
| Dehumidifier (zone or basement) | $500 - $1,800 |
| Ventilation Duct Repair/Sealing | $200 - $800 |
What moves the price? Existing ductwork condition matters most in Boulder. A home with sealed, properly sized ducts might get a filtration upgrade for $400. A University Hill rental with no return-air path and original 1950s galvanized ductwork will run toward the higher end of ERV/HRV pricing because we’re building infrastructure that doesn’t exist. We quote upfront, in writing, before any work starts. The price quoted is the price paid. Call (866) 561-3358 for a free estimate - we’ll look at your specific setup and give you a real number.
Don’t forget our standing offers: $50 off any repair over $250, free second opinion on any written estimate, $89 seasonal tune-up, and a permanent 5% discount for seniors and veterans.
We Also Serve Cities Near Boulder
Our crews work throughout the northern Front Range. If you’re in Boulder, Lafayette, Broomfield, Longmont, or Arvada, we cover your ZIP code. Same live-answer phones, same 90-Day Done Right Promise, same journeyman technicians. The drive from our dispatch point to Boulder is routine - we’ve been making it for decades.
Serving Boulder, CO - Our Local Coverage Area
We’re based in the Boulder area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Air Quality & Ventilation in Boulder
Sometimes, but it depends on your ductwork. Gravity furnaces lack the forced-air pressure needed for standard media filters, and many have no return-air pathway at all. We’ve added powered return chases and low-static filtration to gravity systems in University Hill, but the cost often approaches half a replacement. Call (866) 561-3358 and we’ll assess your specific setup - estimates are free.
An HRV or ERV can satisfy the ventilation requirements of Boulder’s SmartRegs ordinance, but it must be properly sized and ducted to count. We’ve installed systems in Whittier rentals specifically to meet audit deadlines, and we know what the inspectors look for. The key is documented airflow at the rated elevation, not just equipment installation. We provide the commissioning paperwork you need. Call for a free estimate and we’ll review your audit timeline.
It shouldn’t. Boulder’s relative humidity averages in the 30s - too dry for most dehumidifiers to cycle normally. If yours runs constantly, you likely have a moisture intrusion problem: basement seepage, a plumbing leak, or a disconnected dryer vent. We diagnose the source rather than selling you a bigger dehumidifier. Call (866) 561-3358 and we’ll find what’s actually wrong.
Probably yes, at least for the return side. Legacy evaporative coolers in Boulder often used small grilles and minimal ductwork designed for high airflow at low static pressure. Refrigerant AC needs larger returns and sealed ducts sized for the altitude-adjusted cooling load. We’ve converted dozens of these systems in Table Mesa and Chautauqua neighborhoods. The duct redesign adds $800-$2,500 to the job but prevents the freeze-ups and short cycling that plague undersized conversions. Call for a free assessment of your specific cooler and duct layout.
A UV purifier helps with biological contaminants - mold, bacteria, viruses - but it does not remove pollen or smoke particles. For those, you need proper filtration first. We often pair a UV-C light with a 4-inch media filter for Boulder customers dealing with both concerns. The UV handles what’s alive; the filter handles what’s particulate. If wildfire smoke is your main worry, ask us about MERV 13+ upgrades and sealed ductwork instead. Call (866) 561-3358 and we’ll match the solution to your actual problem.
Ready to breathe easier in your Boulder home? Call Fireside Heating & Air Co. at (866) 561-3358 for a free estimate. A live person will answer, 24 hours a day, and we’ll send a background-checked, uniformed technician who knows Boulder’s older housing stock and elevation-specific requirements. The price we quote is the price you pay, and every job is backed by our 90-Day Done Right Promise - in writing, no arguing.
Written by Glen Hartman, Owner at Fireside Heating & Air Co., serving Boulder and the Front Range since 2018.