What does this project involve, and what comes back?
Runs in your browser. Nothing is sent anywhere.
Why does this refuse to quote a Greeley price per square foot?
Because there is not one to quote. This site's sourcing rule is that facts come from utility program pages, government sources, and the city's own publications — never from contractor marketing sites, aggregator round-ups, or a number borrowed from a different market. Those primary sources publish code requirements and rebate terms in detail. None of them publishes what insulation costs in Greeley.
So there are two options. Print a confident local figure lifted from somewhere that made it up — or borrowed from a sibling market's own estimate, which is the same problem wearing a hedge — or scope the project honestly and let a real assessment produce the price. The second is less satisfying and it is the one that survives being checked. Almost every competitor page in this market takes the first option, which is why their numbers agree with each other and trace to nothing.
What scoping the project is still good for: knowing your square footage, your starting insulation level, and whether removal is on the table before you get on the phone, so the quotes you collect are actually comparable to each other. That is a real question and a scope answers it. It just will not tell you what your neighbor paid.
What is exact here, and why is that the useful part?
The rebate. Atmos publishes both the rate and the cap, so once you have a project cost the result is arithmetic rather than an estimate. The rate on attic insulation is 75% of project cost where existing insulation starts below R-20. Wall, crawlspace or basement, and floor insulation are each rebated at 75% as well, against their own caps, and air sealing is a flat amount against a documented 20% leakage reduction. The caps and the flat amount are the part Atmos revises, so read them on the Atmos rebate page rather than here.
That asymmetry is worth understanding because it inverts the usual advice. The normal instinct is to nail down the price first and treat incentives as a bonus at the end. Here the incentive is the known quantity and the price is the estimate, which means the rebate is the part you can plan around with confidence.
Two conditions travel with it and both cost people money when missed. The application is due within 60 days of installation. And the receipt has to state the R-value and the amount installed — a receipt that just says 'attic insulation' and a total is not enough to claim against.
Atmos states that its amounts are subject to change and that rebates are available only until program funding is fully allocated, which is why this page gives you the structure and sends you to Atmos for the figures.
Sources
What the data says
According to Atmos Energy, Atmos Energy rebates residential attic insulation at 75% of total cost where the starting R-value is less than R-20, and publishes the amount that rebate currently pays on its own rebate page.
According to the Colorado Energy Office's Weatherization Assistance Program, the Weatherization Assistance Program provides no-cost weatherization services for qualified residents and homes, and lists insulation in attic, floors, and walls among the services a household may receive based on the results of its required free home energy audit.
According to ENERGY STAR, EPA estimates that homeowners can save an average of 15% on heating and cooling costs by air sealing their homes and adding insulation in attics, floors over crawl spaces, and basements.
Take the next step
Want the real number instead of a scope?
The free in-home assessment measures the attic, identifies what is there, and prices the work with the rebate applied — a figure specific to your house rather than a market-wide guess. If you look likely to qualify for the no-cost state program, you will be pointed there instead.
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Tell Us About Your Home
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We've Got It. Here's What Happens Next.
We've got your info and are routing it to a local pro. When they call, here's what to look for in the quote you receive: (1) R-value target — Greeley builds to the 2021 IECC, which puts attics at R-60, and accepts R-49 only where the insulation carries its full uncompressed depth over the wall top plate at the eaves; anything less is under-spec. (2) Air sealing scope — insulation alone does nothing if air leaks aren't sealed first, so it belongs on the quote as its own line with its own scope, and a blower door test is what documents the before-and-after. (3) Rebate handling — ask who files the rebate paperwork with your gas utility, and confirm what that utility's filing deadline is and that the application will go in inside it. (The federal IRA Section 25C tax credit ended December 31, 2025, and Colorado's HEAR program is closed. Which utility to ask about an insulation rebate depends on your town: Atmos Energy's residential rebates are the primary insulation rebate programs in Greeley, Evans and Eaton, while the natural gas utility is Xcel Energy in Johnstown, for most of Milliken, and for most locations in Severance — Xcel sets out its own insulation and air sealing rebate terms on its rebate page. Income-qualified households can get insulation work done at no cost through the state Weatherization Assistance Program.) (4) Removal scope — older homes often need old insulation removed before new install. If a quote skips all four, get another quote.
Frequently asked
Questions about insulation cost in Greeley
Why won't this tool give me a Greeley price?
Because no primary source publishes one. Utility program pages, government sources, and the city itself publish code requirements and rebate terms, not contractor pricing. Printing a local per-square-foot figure would mean inventing it, lifting it from an aggregator, or borrowing one from a different market — and this site does none of those. The free in-home assessment gives an actual price instead.
Why doesn't this tool give me a cost range at all?
Because a range built from a borrowed or estimated per-square-foot rate is still an invented number, just a hedged one — and this site's rule is not to print a figure it cannot trace to a primary source, hedged or not. What decides your project's scope — square footage, current insulation, and removal need — is worth knowing before you call for quotes, and that's what this tool characterizes.
Is the rebate figure as rough as the scope?
No, and that difference is deliberate. Atmos publishes both the rate and the cap — the rate is 75% of project cost for attic insulation — so applying them to your actual project cost is arithmetic once you have that number from the free assessment. What it pays is published by Atmos on its own rebate page rather than here, because that page carries no effective date and states amounts are subject to change and available only until program funding is allocated — read the current number there before you scope.
Is removal really the biggest cost driver?
Often, yes, on jobs where it's genuinely needed. Removal is labor in a confined space with containment, a vacuum unit, and disposal — a real added scope, not a rounding error. It is also frequently unnecessary — dry, intact, non-vermiculite material can normally be covered. Get a straight answer on whether it is actually required before treating it as part of the budget.
What about the free options?
If household income is low enough, the state Weatherization Assistance Program may do the work at no cost, delivered in Weld County by the Energy Resource Center in Berthoud. The limits are higher than most people guess — on the Colorado Energy Office's WAP income eligibility chart, Weld County currently reaches $70,000 for one person and $99,920 for a household of four, checked September 10, 2026. They reset every federal fiscal year, so the Colorado Energy Office's own Weatherization Assistance Program page is the place to confirm them rather than this one. That is a better outcome than any rebate on a paid invoice and it is worth checking before budgeting anything.
When should I not spend this money at all?
When the attic is already at or near R-60 — or at the R-49 the code accepts only where the insulation carries its full uncompressed depth over the wall top plate at the eaves. Adding depth to an attic that is already at Greeley's adopted target buys very little, and no rebate makes a low-return project into a good one. Measure first — if the number comes back near target, the correct spend on attic insulation is nothing.
Will a contractor's quote match what I expect?
There's nothing here to hold a contractor to — this tool intentionally doesn't produce a number. Its job is to characterize the scope so you walk into quotes knowing your square footage, your starting insulation level, and whether removal is on the table, which makes quotes easier to compare against each other.
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