9 Signs You Should Consider a Home Energy Audit

A Connecticut Homeowner’s Guide

Living in Connecticut means dealing with long winters, humid summers, and some of the highest electricity and natural gas rates in the nation. If your heating or cooling bills feel out of control, an energy audit could save you hundreds—or even thousands—per year. A professional home energy audit (also called a home energy assessment) uses tools like blower-door tests, infrared cameras, and duct blasters to pinpoint exactly where your home is wasting energy.

Here are the top signs that it’s time to schedule one:

1. Your Heating or Cooling Bills Are Shockingly High Average annual heating costs in Connecticut vary significantly by fuel, but expect $1,200-$2,000+ for electric/oil, while natural gas is cheaper; for 2024-2025, expect costs around $1,200-$1,900 for electricity/oil and $1,200-$1,500 for natural gas, with oil often being pricier, but actuals depend heavily on home insulation, usage, and fluctuating energy prices. Connecticut's eletricity costs are high, with average residential electricity around $190-$380/month ($2,300-$4,500/year) as of late 2025, driven by some of the nation's highest rates (around 30.5¢/kWh), but varying by provider like Eversource and United Illuminating. If your bills are consistently higher than your neighbors’ or have jumped 20–30 % in the last couple of years, you likely have poor insulation, air leaks, or an inefficient furnace or heat pump. An audit will quantify exactly how much you’re losing.
   

2. Certain Rooms Are Always Too Hot or Too Cold Drafty bedrooms in winter, a stuffy upstairs in summer, or a kitchen that never feels comfortable? These are classic signs of uneven insulation, missing air barriers, or duct leakage. A blower-door test can measure how much air is escaping and where.
   

3. You Feel Drafts Around Windows, Doors, or Baseboards If you can feel cold air on your ankles or see curtains moving when the windows are closed, your home has air infiltration. Connecticut homes built before 2000 often have inadequate weather-stripping and caulking. An audit will find every leak and show you the simplest, most cost-effective fixes.
   

   

   infrared image of a drafty window

4. You see Frost on Your Windows Frost on windows occurs when warm, moist indoor air contacts the cold glass surface and condenses, then freezes. This means heat is escaping through the window (poor insulation or air leaks) while humidity is rising from the loss of conditioned air. It's a clear sign of energy waste.
   

   

   window with frost

5. Your Furnace or Boiler Is 15+ Years Old Older equipment is less efficient and often oversized for the house. If your system is running constantly yet the house still feels cold, you may be losing heat through the walls, attic, or ducts. An audit can confirm whether it’s time to upgrade or if sealing and insulating first will give you more bang for your buck.
   

   

   old boiler

6. Ice Dams or Frost on Interior Walls Ice dams on your roof and frost on the inside of windows are red flags for excessive heat loss through the attic and poor attic ventilation. In Connecticut, this is one of the most common causes of roof damage and high heating costs.

   

   house with massive ice damning

7. You Have an Older Home (Pre-1990) Homes built before modern energy codes often have minimal insulation, single-pane windows, and no air sealing. Even if you’ve replaced the furnace, you could still be pouring money into the walls and attic.
   

8. You’re Planning a Major Renovation or Addition Before you add a sunroom, finish the basement, or replace windows, get an audit first. The results will guide you on the best insulation levels and air-sealing strategies so you don’t waste money on expensive upgrades that won’t perform as well as they could.
   

9. You Want to Take Advantage of Rebates and Tax Credits Connecticut’s Energize CT program, federal Inflation Reduction Act credits, and utility rebates (Eversource, United Illuminating) can cover 50–100 % of the cost of an audit and many recommended improvements. You can’t claim them without a professional audit report. |

The Bottom Line If any of these signs sound familiar, a home energy audit is one of the smartest investments you can make in Connecticut. A typical audit costs $300–$600, but most homeowners recoup the cost in 1–3 years through lower bills and better comfort. Many utilities offer free or heavily subsidized audits, so call Energize CT at 877-947-4321 or visit energizect.com to find a certified provider near you.

Don’t keep throwing money out the window—literally. Schedule your audit today and start saving.

Maxim Home Inspections offers many types of inspections near Newtown CT (western Connecticut service area) including local home inspections,  radon testing, mold inspections, termite inspections, , septic inspections and well inspections just to name a few. . If you'd like to have your home inspected you can get a quote an even schedule a home inspection with me you local home inspector.