How to compare home energy upgrade quotes

Begin with the observed problem

Ask each provider to state what they observed: where energy or comfort is being lost, how it was assessed, and what uncertainty remains. A written home energy assessment can identify priorities and provide a shared starting point. A quote that immediately promises a fixed savings percentage without your home data deserves scrutiny. Check whether the recommendation addresses an air leak, insulation level, HVAC operation or another distinct problem.

Compare the same scope

List the exact locations, materials or equipment, preparation, access, disposal, permits if applicable, and restoration of finishes. For HVAC work, ENERGY STAR says to ask about appropriate sizing, airflow, duct condition and installation quality. For air sealing or insulation, ask about moisture, ventilation and combustion safety. Compare written exclusions as carefully as inclusions. Local license, insurance and permit requirements vary; verify them in the jurisdiction where the work occurs.

Separate cost from estimated benefit

Ask how an energy-savings estimate was calculated, which bills and weather assumptions were used, and whether it represents a range or a guarantee. Compare total installed cost and any ongoing maintenance separately from possible savings. Utility programs or incentives can change; verify current eligibility with the utility or program administrator before including them in a decision. A low quote may omit safety checks or diagnostic work; a high quote does not automatically mean better quality.

Plan verification and accountability

Request a written schedule, payment milestones, warranty terms, responsible contractor, and the measurements or observations that will confirm completion. ENERGY STAR advises checking references and understanding contractor qualifications. After work, document what was done and compare comparable bill periods with weather and occupancy in mind. A change in the bill is not proof that one measure alone caused it.

• What finding supports this improvement?
• What exactly is included and excluded?
• Who checks ventilation, moisture and relevant equipment safety?
• What assumptions support any savings estimate?
• How will the completed work be verified?