Service Areas & Case Studies Across Central Maryland

Baltimore County has one of the most diverse housing stocks in Maryland — from 1920s colonials in Lutherville and Towson to 1960s ranchers in Cockeysville and mid-century splits in Catonsville. Many of these homes have original insulation that's well below current code, and air leakage rates that drive up energy bills year-round. As a Towson-based contractor, this is our home turf.

• Towson Case Study
• Glen Arm Audit
• Timonium Audit
• Cockeysville
• Lutherville-Timonium
• Catonsville
• Owings Mills
• Phoenix
• Reisterstown
• Pikesville

Towson: 1964 Colonial

A full energy audit on a classic Towson colonial revealed the common issues we see in 1960s homes across Baltimore County — insufficient attic insulation and air leakage throughout the envelope.

Read the full case study →

Energy Audit Glen Arm · Baltimore County

Glen Arm: Guest Home with a $1,200 February Bill

A renovated Airbnb under 2,000 sq ft was running up $1,200 BGE bills. The audit found seven compounding issues — improperly fitted casement windows, two oversized attic fans running 24/7, and insulation buried behind new drywall. This is an energy audit, not a completed job.

$1,200 February bill 14.7 ACH50 7 issues found

Read the full audit findings →

Howard County's housing stock is heavily concentrated in the 1960s–1980s era — especially in Columbia, where thousands of townhouses and single-family homes were built during James Rouse's planned community boom. These homes share common energy problems: thin original attic insulation, uninsulated rim joists, leaky building envelopes, and HVAC systems nearing the end of their lifespan.

• Columbia Case Study
• Ellicott City Case Study
• Clarksville
• Elkridge
• Fulton
• Highland
• Dayton
• Glenelg
• Jessup
• Marriottsville
• Savage
• Woodstock

Columbia: 1970s Townhouse

This townhouse tested at nearly 4x leakier than a new home. We found low attic insulation, uninsulated rim joists behind drop ceiling panels, missing bath fans, and an unsealed air handler.

11.77 ACH50 $4,659 in rebates
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Ellicott City: Townhome

Air sealing this Ellicott City townhome reduced air leakage by 15% and improved temperature consistency between floors — a common complaint in multi-level homes.

15% air leakage reduction
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Anne Arundel County runs from the waterfront communities of Annapolis and Severna Park to the suburban neighborhoods of Crofton and Gambrills. The mix of colonial-era homes near the Chesapeake and postwar subdivisions inland means we see a wide range of energy issues — from balloon-frame air leakage in historic homes to poorly insulated attics in 1970s and 1980s builds.

• Annapolis
• Severna Park
• Crofton
• Arnold
• Crownsville
• Davidsonville
• Gambrills
• Chesapeake Beach
• Glen Burnie

Montgomery County is PEPCO territory, and that means a separate — but equally valuable — set of Home Performance with ENERGY STAR rebates. From mid-century ranchers in Silver Spring and Kensington to larger colonials in Bethesda and Potomac, these homes often have the same core problems: outdated attic insulation, significant air leakage, and energy bills that don't match the comfort level inside.

• Silver Spring Case Study
• Bethesda
• Rockville
• Potomac
• North Potomac
• Olney
• Gaithersburg
• Kensington
• Wheaton

Silver Spring: 1966 Rancher

This mid-century rancher was losing conditioned air at a high rate. After attic air sealing and insulation, we reduced air leakage by 32% — a dramatic improvement in both comfort and efficiency.

32% air leakage reduction
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Prince George's County is also PEPCO territory, with a large inventory of 1960s–1980s single-family homes and townhouses in communities like Bowie, Laurel, and Upper Marlboro. These homes frequently have the same insulation and air sealing deficiencies we see across the region — and qualify for the same PEPCO rebates.

• Bowie
• Laurel
• Upper Marlboro

Carroll County's mix of rural farmhouses and suburban developments in Westminster, Hampstead, and Manchester presents unique energy challenges. Older farmhouses can have extreme air leakage, while newer subdivisions often have attics that were insulated to the minimum code of their era — still well below today's recommended R-49.

• Westminster
• Hampstead
• Manchester

Harford County's suburban communities in Abingdon and Bel Air feature predominantly 1980s–2000s construction. While newer than some of the homes we work on in Baltimore and Howard counties, many still have insulation that falls short of current standards — and air sealing was rarely a priority during original construction.

• Abingdon
• Bel Air
• Fallston

We've extended our service area to parts of Maryland's Eastern Shore when the project is a fit. Our Greensboro case study shows what's possible — a 37% reduction in air leakage in a single project, translating to real savings on heating and cooling costs.

• Greensboro Case Study