Mass Save Home Energy Assessment: What to Expect (Free for All MA Homeowners)
A stranger comes to your house, installs $200 worth of free stuff, tells you how to save $1,500/year on energy, and unlocks $10,000+ in rebates. All for $0. Here's the full breakdown.
Key Takeaways
- The assessment is 100% free for all Massachusetts residents with an active utility account
- You'll receive $100-$200+ in free items installed on the spot (LED bulbs, power strips, etc.)
- It's the required first step for insulation (75% off), heat pump ($10,000+), and other major rebates
- No obligation to purchase anything — you can take the free stuff and walk away
Every Massachusetts energy rebate guide starts the same way: "Step 1 — Schedule a Home Energy Assessment." But nobody explains what actually happens during one.
What does the assessor do? How long does it take? What's the catch?
Here's the short version: there is no catch. The Mass Save Home Energy Assessment is genuinely free, takes about 2-3 hours, and you walk away with $100-$200 worth of free items installed in your home. You also get a detailed report telling you exactly which rebates you qualify for and how much you'd save on each upgrade.
It's the single best starting point for anyone thinking about energy upgrades — and the required gateway to Massachusetts' biggest rebates.
What Is the Mass Save Home Energy Assessment?
The Home Energy Assessment (sometimes called a "home energy audit") is a free, comprehensive evaluation of your home's energy use. A certified energy specialist visits your home, inspects everything from the attic to the basement, and produces a personalized report with specific upgrade recommendations and rebate amounts.
It's funded by your utility company through the Mass Save program. You already pay for it through a small charge on your monthly electric and gas bills. If you haven't had one done, you're paying for a service you're not using.
The assessment is available to every Massachusetts resident — homeowners, renters (with landlord permission for upgrades), and landlords — with an active account through Eversource, National Grid, Unitil, Cape Light Compact, Berkshire Gas, Liberty Utilities, or a participating municipal utility.
What Happens During the Assessment
The visit follows a structured process. Here's what to expect, room by room:
Review Your Energy Bills
The assessor starts by looking at your recent electricity and gas/oil usage. They'll identify seasonal patterns, unusual spikes, and how your usage compares to similar homes. This gives them a baseline before they start inspecting.
Blower Door Test
A fan is temporarily mounted in your front door to depressurize your home. This reveals exactly where air leaks in — around windows, through attic bypasses, at rim joists, and through any gaps in the building envelope. The test gives a measurable air leakage number.
Attic Inspection
The assessor checks your attic insulation depth, material condition, and coverage. They're looking for gaps, compressed insulation, and attic bypasses (holes where heated air escapes). Most Massachusetts homes built before 2000 are significantly under-insulated.
Basement & Foundation
They inspect basement walls, rim joists, and any crawl spaces for insulation levels and air leaks. Uninsulated basements are one of the biggest sources of heat loss in older Massachusetts homes.
Heating & Cooling Systems
Your furnace, boiler, water heater, and any AC units are evaluated for age, efficiency, and condition. The assessor notes your current fuel type and identifies whether you'd qualify for heat pump rebates based on your existing setup.
Windows, Doors & Walls
The assessor checks window type (single, double, triple pane), condition, and air tightness. Wall insulation is tested non-invasively. They'll note which areas would benefit most from upgrades.
Free Items Installation + Report
While there, the assessor installs free items throughout your home (see below). They finish by walking you through their findings, explaining each recommended upgrade, the rebate amount you'd receive, and the estimated energy savings. You get a written report to keep.
Free Items You'll Receive (Installed on the Spot)
This is the part that surprises most people. The assessor doesn't just look around and leave. They bring a bag of energy-saving products and install them before they go:
LED Light Bulbs
Every remaining incandescent or CFL bulb in your home gets swapped for an LED. Some homeowners get 20-30 bulbs replaced. That's $50-$80 worth of bulbs at retail.
Smart Power Strips
Advanced power strips that eliminate "phantom load" from TVs, game consoles, and electronics that draw power even when off. Saves $50-$100/year per strip.
Low-Flow Showerheads & Aerators
High-efficiency showerheads and faucet aerators that reduce hot water usage without sacrificing pressure. Saves on both water and water heating costs.
Pipe Insulation & Weather Stripping
Foam insulation wraps for accessible hot water pipes, plus weather stripping for drafty doors. Small fixes with immediate comfort improvement.
All of this is yours to keep regardless of whether you proceed with any other upgrades. Even if you do nothing else after the assessment, you walk away with $100-$200+ in installed products and meaningful energy savings.
What the Assessment Unlocks: $10,000+ in Rebates
The free items are nice. But the real value of the assessment is what it makes you eligible for. Most of Massachusetts' biggest rebates require a completed Home Energy Assessment. Without one, you can't access them.
Rebates Unlocked by the Home Energy Assessment
| Upgrade | Mass Save Rebate | Assessment Required? |
|---|---|---|
| Insulation & Air Sealing | 75–100% covered | Yes |
| Heat Pump (whole home) | $1,250 – $16,000 | Yes (recommended) |
| Heat Pump Water Heater | $750 – $2,500 | Recommended |
| 0% HEAT Loan | Up to $50,000 at 0% | Yes |
| Windows & Doors | $75/window, $100/door | Varies by utility |
| Smart Thermostat | Free or discounted | No |
The assessment also determines your income eligibility for enhanced rebates. If your household qualifies at 60% or 80% of the Area Median Income, you could receive significantly higher rebates — including fully-covered insulation and up to $16,000 toward a heat pump. The assessor can help you check right there during the visit.
The Assessment Pays for Itself Immediately
Between the free LED bulbs ($50-$80), smart power strips ($30-$50), showerheads ($15-$25), and pipe insulation ($10-$15), most homeowners receive $100-$200+ in installed products. Add the annual energy savings from those items ($100-$200/year), and you're ahead before you even consider the major rebates.
How to Schedule Your Free Assessment
Find Your Utility
Not sure which utility serves your address? Use our ZIP code lookup tool to find out instantly. You'll need your utility account number when you schedule.
Book Online or by Phone
Visit the Mass Save website (masssave.com) and click "Schedule a Home Energy Assessment," or call your utility directly. You'll choose a date and time window (usually morning or afternoon blocks).
Prepare Your Home
Clear access to your attic (pull-down stairs or hatch), basement, and mechanical systems. Have a recent utility bill handy. No need to clean — the assessor is looking at insulation, not your housekeeping.
Assessment Day (2-3 hours)
Be home for the full visit. Walk around with the assessor if you can — you'll learn a lot about your home's weak points and where the biggest savings are. Ask questions. They're there to help.
Review Your Report & Decide
You'll receive a detailed report with prioritized recommendations. Take your time reviewing it. There's no deadline and no pressure to act immediately. When you're ready, Mass Save coordinates the contractors and rebates for you.
5 Tips to Get the Most Out of Your Assessment
1. Know Your Utility Account Number
The assessor needs to verify your account. Have your most recent bill ready or know your account number. This speeds up the process and avoids rescheduling.
2. Clear Your Attic Access
If your attic access is buried under boxes in a closet, clear it before the visit. The attic inspection is often the most valuable part — it's where the biggest insulation gaps are. If the assessor can't get up there, you miss out on key recommendations.
3. Walk Through With the Assessor
Don't just let them do their thing while you watch TV. Follow along and ask questions. Where is heat escaping? What would you fix first? How much would it cost? The assessor sees hundreds of homes — they know exactly which upgrades give the best bang for the buck.
4. Ask About Income Eligibility
Even if you think you earn too much, ask. The income thresholds are higher than most people expect — a family of four can qualify at up to $95,000 in some counties. The enhanced rebates at 60% and 80% AMI are significantly more generous.
5. Don't Feel Pressured to Decide on the Spot
The assessor will present recommendations, but you don't need to commit to anything during the visit. Take the report home, read it, compare it to your budget and priorities. The rebates aren't going anywhere — you can act next week or next year.
The Bottom Line
The Mass Save Home Energy Assessment is the rare government-funded program that delivers obvious, immediate value. You pay nothing. You receive $100-$200+ in free products. You get a personalized roadmap to potentially $10,000+ in rebates. And there's no obligation to do anything after.
If you've been thinking about upgrading your insulation, switching to a heat pump, or just finding out why your energy bills are so high, this is the place to start. The assessment answers every question with data specific to your home.
Schedule one. Walk through it with the assessor. Then decide what makes sense for your home, your budget, and your timeline.
Ready to Schedule Your Free Assessment?
Find your utility and explore all the rebates your home might qualify for.
Frequently Asked Questions
How much does a Mass Save Home Energy Assessment cost?
Nothing. The assessment is 100% free for Massachusetts residents with an active electric or gas account through a participating utility. There's no catch and no obligation to proceed with any recommended upgrades.
How long does the Home Energy Assessment take?
Plan for 2-3 hours. The assessor needs time to inspect your attic, basement, walls, and windows, run a blower door test, check your heating/cooling systems, and explain their findings. Larger homes may take slightly longer.
Do I need to be home during the assessment?
Yes. You (or another adult who can make decisions about the property) must be present. The assessor needs access to all areas of the home and will walk you through findings and recommendations in real time.
What free items do I get during the assessment?
Assessors typically provide and install LED light bulbs (replacing any remaining incandescents), smart power strips, low-flow showerheads and faucet aerators, and pipe insulation for hot water pipes. These are yours to keep regardless of whether you proceed with other upgrades.
Is the Home Energy Assessment required to get rebates?
For most major rebates (insulation, heat pumps, weatherization), yes. The assessment is the gateway to Mass Save's rebate programs. Some smaller rebates (smart thermostats, appliance recycling) don't require an assessment, but starting with one ensures you don't miss anything.
How soon can I schedule an assessment?
Wait times vary by utility and season. Spring and fall tend to have shorter waits (1-2 weeks). Winter is busiest and may require 3-4 weeks. Call your utility or book online through the Mass Save website.
Can renters schedule a Home Energy Assessment?
Yes. Renters can schedule the assessment, and they'll still receive the free items (LED bulbs, power strips, etc.). However, any structural upgrades like insulation or heat pumps require written landlord approval since the work is done to the property.