The Boulder County HVAC Service Area: 14 Cities We Serve From Boulder
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Heating across the service area: the local picture
This is the map of where Boulder HVAC Pros works and what is different in each place. From our base in Boulder we serve 14 cities and towns across five counties, from Firestone at 4,970 feet to Nederland at 8,233, and each one has its own page built on its own facts: who built its houses and when, what fuel they heat with, which utility serves them, and what its own town hall says about permits. This page is the index. It tells you which county your town is in, what that means for rebates, what our whole service area has in common, and where to read the page written for your address.
Fourteen towns, five counties, more than 3,200 feet of elevation between the lowest and the highest. Four things travel with every heating call we take, and each has its own section below: elevation, county lines, fuel, and the one rebate boundary that follows the county map.
Elevation: 4,970 feet in Firestone to 8,233 in Nederland
Across the whole service area, the altitude answer is in each furnace’s own manual, because every maker sets its requirements model by model. Goodman’s installation manual for one gas furnace line is a clear case: the high-altitude orifice kit is required where the specification sheet calls for it, and the manual’s table shows no kit for natural gas up to 7,000 feet. Thirteen of our fourteen towns, from 4,970 feet in Firestone to 5,498 in Superior, fall inside that table. Nederland, at 8,233 feet, is the one exception, above it. At every one of those elevations the manual forbids the same thing, derating the furnace by lowering manifold pressure, since thin air and low pressure together “may cause incomplete combustion, flashback, and possible yellow tipping.” Incomplete combustion, in turn, is the source of carbon monoxide.
Five counties, one service area
The Census Bureau’s place-by-county file sorts our fourteen towns five ways. Lafayette, Louisville, Niwot, Nederland and Lyons are Boulder County. Mead, Frederick, Dacono and Firestone are Weld County. Broomfield is its own consolidated city and county. Westminster spans Adams and Jefferson counties, and three towns straddle a line: Longmont and Erie sit across the Boulder–Weld boundary and Superior across Boulder–Jefferson, so on those three the county is a fact about the address, not the town. The county decides more than the mailing address. It decides which rebate programmes an address can claim, and in the towns on a line it can differ street by street, which is why each city page states its county and what follows from it.
Your next step
Whichever of the fourteen towns you are in, a struggling furnace means calling Boulder HVAC Pros on (720) 764-0399. Keep the rating plate, the gas bill and the build year handy, and read your town’s page above first; much of what decides a heating call is already answered there.
The cities we serve, and how we help in each
Every town below has its own page, written from that town’s own numbers and its own town hall’s pages, not from a template with the name swapped. One line here on what makes each one different; the full picture is on the page.
– Lafayette, Boulder County, 5,210 feet: heating and cooling for Lafayette homes, from the county’s rebate boundary to what its housing stock asks of a furnace. – Louisville, Boulder County, 5,336 feet: heating service for a town rebuilding, where post-fire rebuilds and older survivors sit on the same streets. – Longmont, straddling Boulder and Weld counties at 4,980 feet: heating for Longmont’s 1970s core, where the replacement questions are flues and ductwork of uncertain age. – Broomfield, its own city and county, 5,391 feet: heating and cooling for Broomfield’s newer homes, where being your own county changes the rebate answer. – Westminster, Adams and Jefferson counties, 5,382 feet: heating for Westminster’s 1970s and 1980s houses, where the checks start with flues and ductwork of uncertain age. – Erie, on the Boulder–Weld county line at 5,027 feet: heating service either side of Erie’s county line, where the line runs through the rebate map. – Superior, Boulder and Jefferson counties, 5,498 feet: heating for a town built in the 1990s, six homes in ten from that one decade. – Niwot, unincorporated Boulder County, 5,095 feet: heating and cooling in Niwot, where permits go through Boulder County rather than a town hall. – Nederland, Boulder County, 8,233 feet: furnace and heating work above 8,000 feet, the one town above the manufacturers’ 7,000-foot table. – Lyons, Boulder County, 5,366 feet: heating for the town with its own electric utility, which changes the rebate question before anything else. – Mead, Weld County, 5,003 feet: furnace and AC service in Mead, where the Town’s own permit page names furnaces and air conditioners. – Frederick, Weld County, 4,980 feet: heating sized to Frederick’s own design temperature, the town that publishes a 1 degree winter figure. – Dacono, Weld County, 5,023 feet: heating for a city built in two waves, 1970s homes and 2010s homes with little in between. – Firestone, Weld County, 4,970 feet: heating for Firestone’s this-century housing stock, nine homes in ten built in 2000 or later, inspected to the 2018 codes.
Why homeowners across these cities call Boulder HVAC Pros
- We are based in Boulder and we work the whole map above.
- The first thing we check on every gas appliance, in every one of these towns, is what its own manual requires at its elevation, because the answer at 4,970 feet and the answer at 8,233 feet come from the same table and are not the same.
- We know which county each address is in and which rebate boundary that puts it behind, so we do not promise a Boulder County rebate in Weld County or an Xcel rebate where the utility is United Power, Black Hills or the Town of Lyons.
- And we know that permits are a town-by-town fact: each city page carries what that town's own building pages say, and where a town's pages do not settle it, the page says to ask the building department rather than guessing for you.
Why this winter, wherever you call from
- the federal 25C credit for efficient heating equipment covered only property placed in service before December 31, 2025, in any of these towns. For 2026, our rebates guide lists what is still on offer.
- one state rule covers the whole map: new furnaces and water heaters sold in Colorado from January 1, 2026 must meet an emissions limit, so every replacement this winter, in any of the fourteen towns, meets it too.
- the code editions are moving at different speeds town by town. Mead, Frederick and Dacono list the 2024 code editions on their own pages, Lyons adopted the 2024 series with effect from July 1, 2026, and Firestone's page still lists the 2018 editions, so identical work two towns apart can be permitted and inspected under different books this winter. That is a reason to plan a replacement rather than take whatever a January breakdown allows: a planned job starts with a load calculation, the right permit for that town, and whatever the furnace's manual requires at that elevation.
How the service area heats: gas nearly everywhere, in different shares
The American Community Survey’s house-heating-fuel table, read town by town across our fourteen city pages, puts utility gas first everywhere, but the share runs from 58.0 percent in Nederland to 90.8 percent in Mead, with electricity’s share running from 6.5 percent in Mead to 26.7 percent in Broomfield, and propane holding real ground in the mountain towns. Every one of those figures has the same limits: the survey records one main fuel per household, so dual systems count once; the five-year sample centres near 2021; and the electric share includes baseboard as well as heat pumps. The shape matters more than the decimals: a gas service area with an electric share that grows toward the county’s newer and denser towns.
The rebate boundary that follows the county map
Boulder County’s EnergySmart programme is for Boulder County residents, and for 2026 it is income-qualified only, for households at or below 100 percent of area median income, with work completed and invoiced within the calendar year, first come, first served. That single boundary sorts our service area in two. An address in Lafayette, Louisville, Niwot, Nederland or Lyons is inside it; so is the Boulder County side of Longmont, Erie and Superior. Broomfield, its own county, is outside. Westminster’s Adams and Jefferson addresses are outside. Mead, Frederick, Dacono and Firestone, all Weld County, are outside. Utility rebates are a separate question with a separate map, because Xcel, United Power, Black Hills and Lyons’ own municipal utility each serve different towns, so the name on your bill decides, and each city page states what its town’s pages say.
Frequently asked questions, town by town
Which cities does Boulder HVAC Pros serve?
Fourteen, all from our Boulder base: Lafayette, Louisville, Longmont, Broomfield, Westminster, Erie, Superior, Niwot, Nederland, Lyons, Mead, Frederick, Dacono and Firestone. Each has its own page, linked in the list above, built on that town’s own housing, fuel, utility and permit facts rather than on swapped-name boilerplate. If your town is not on the list, call and ask; the list is what we have written pages for, and the phone answer is always current.
Which counties are in the service area, and why does the county matter?
Five: Boulder, Weld, Broomfield, Adams and Jefferson, per the Census Bureau’s place-by-county file. The county decides which rebate programmes an address can claim, most sharply Boulder County’s EnergySmart, which stops at the county line. Longmont, Erie and Superior each straddle a line, so there the county, and the rebate answer, is a fact about the address rather than the town.
Who qualifies for EnergySmart across these towns?
Boulder County residents only, and for 2026 the programme is income-qualified: households at or below 100 percent of the county’s area median income, for work completed and invoiced between January 1 and December 31, 2026, first come, first served while funding lasts. That covers Lafayette, Louisville, Niwot, Nederland, Lyons, and the Boulder County side of Longmont, Erie and Superior. Broomfield, Westminster, Mead, Frederick, Dacono and Firestone are outside it, which their own pages state.
Does altitude change furnace work across the service area?
Everywhere, and by the same method: the furnace’s own manual. Goodman’s manual for one of its gas furnace lines requires a high-altitude orifice kit where the specification sheet calls for one, and its table lists no kit for natural gas up to 7,000 feet, which covers every town we serve except Nederland at 8,233 feet, where the kit question is live on every gas furnace. What every manual forbids at any altitude is derating by lowering manifold pressure, which can cause incomplete combustion, and incomplete combustion is how carbon monoxide is made.
Do permit rules differ from town to town?
Yes, enough that each city page carries its own. Mead’s permit page names furnaces and air conditioners outright; Dacono lists “replacing or installing an air conditioning or heating unit or water heater”; Firestone’s permit notice lists furnaces, boilers and water heaters; Nederland handles furnace replacements on its One-Stop application; Niwot’s permits run through Boulder County because the town is unincorporated. Where a town’s pages do not name heating work either way, the city page says so and tells you to ask that building department.
Which utility serves my town, and why does it matter for rebates?
It varies more than anything else on this map. Xcel serves electricity and gas in much of Boulder County; United Power and Black Hills serve the Weld County towns; Lyons runs its own electric utility; Mead’s gas comes from one of two companies depending on the address. Every utility rebate is conditioned on being that utility’s customer, so the names on your electric and gas bills decide, and your town’s page states what its own municipal pages say about who serves it.