Home energy audits · North Liberty, Iowa

Home energy audits in North Liberty, IA

North Liberty has grown quickly over the past two decades, and the housing stock reflects it. Newer two-story builds near Penn Meadows Park and Liberty Center sit alongside older ranches and split-levels closer to Highway 965. Each era brings its own set of energy problems — an audit identifies exactly which ones are costing you comfort and money in your specific home, not a generic house.

★★★★★ 5.0 on Google · BPI certified since 2009 · We don’t sell the work we measure
New construction craftsman-style ranch home in North Liberty, Iowa with three-car garage and stone accents, typical of homes receiving a home energy audit or blower door test
15+ yrs
Home energy & building performance work in Iowa
BPI
Certified Building Analyst & trainer since 2009
Independent
We don’t sell insulation, HVAC, or the work we measure
Corridor
Serving North Liberty and the greater Iowa City corridor
What we test

What a North Liberty energy audit actually measures

A full home performance assessment is more than a walk-through with a clipboard. We combine several diagnostic tools to build a complete picture of how your house is performing — and the result is a prioritized report, not a sales pitch, for a flat $699, any size home. You see which improvements will move the needle and which would be a waste of money in your particular house.

Air leakage

Blower Door Testing

A calibrated fan quantifies total air leakage in ACH50 (air changes per hour at 50 pascals) — a real number, not an estimate.

Blower door testing →
Imaging

Infrared Thermography

Thermal imaging locates missing insulation, thermal bridges, and hidden bypasses the eye can’t see.

Thermal imaging →
Ductwork

Duct Leakage Testing

Where forced-air systems are involved, we measure how much heated and cooled air never reaches the rooms it was meant for.

Safety

Combustion Safety & CO

Draft and carbon monoxide measurement on gas appliances confirms your furnace and water heater are venting properly.

Inspection

Visual Assessment

Attic insulation, rim joists, foundation, and mechanical systems — evaluated as one connected system, because that’s how a house behaves.

Credentials

An Uncommon Combination

Home Star Iowa is owned by a BPI Certified Building Analyst and RESNET HERS Rater operating a BPI Testing Center. Every audit is conducted personally, not subcontracted.

The housing stock

Common North Liberty problems

Certain issues show up again and again in homes across North Liberty. If any of these sound familiar, an audit can confirm the cause and point to the fix:

Two-story homes

Upper floor overheating

Two-story homes near Penn Meadows Park often show pressure imbalance between floors. Warm air stacks upstairs while the thermostat downstairs keeps calling for more cooling.

Attached garages

Garage leakage

Attached garages are a frequent source of air movement into the living space, and in homes where the bonus room sits above the garage, comfort complaints are almost universal.

Larger floor plans

Long duct runs

Duct runs that pass through unconditioned attic space are common in larger plans. Leaks and uninsulated trunks can cost 20% or more of heating and cooling output before air ever reaches the register.

Pre-2012 code

Rim joist & basement leakage

Homes built before Iowa adopted the 2012 energy code frequently leak at the rim joist and basement — areas that were rarely sealed during original construction.

Why homes built before the 2012 code need attention. Iowa’s adoption of the 2012 IECC raised the bar for air sealing, insulation, and window performance. Homes built even a few years earlier often have thinner wall cavities, minimal attic air sealing, and leaky can lights — all problems that testing can uncover and that targeted improvements can largely resolve.
Service area

Serving North Liberty and the Iowa City corridor

Home Star Iowa provides testing and audits throughout the corridor:

Common questions

A few things North Liberty homeowners ask

Why is one upstairs bedroom always warmer?
Usually a combination of airflow imbalance and attic heat gain. A blower door test combined with infrared imaging typically identifies the specific cause within an hour.
Do I need an audit if my house is only ten years old?
Yes — more often than homeowners expect. Construction defects, HVAC commissioning errors, and settling can all show up well after move-in.
Will the audit tell me what to fix first?
Yes. Our reports prioritize improvements by payback and comfort impact, so you can decide where to invest. Because we don’t sell insulation, windows, or HVAC, the list isn’t shaped by a sale. Why an independent auditor.
How long does a typical audit take?
Two to three hours on site for most single-family homes, plus report delivery within a few business days.

Request a North Liberty home performance review

Independent home energy audits and diagnostics across North Liberty and the greater Iowa City corridor.