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Claim This BusinessKing Conservation Group Insulation operates from Lancaster, Pennsylvania, serving Central PA homeowners across Lancaster, Chester, Lebanon, Berks, and York counties. The company holds PA license HIC PA094622 and maintains a perfect 5.0-star rating from 144 client reviews. As a Building Performance Institute certified contractor, the team approaches every home as an integrated system rather than treating individual components in isolation, using advanced diagnostic testing to identify root causes of energy loss and comfort problems before recommending targeted upgrades.
This contractor distinguishes itself through BPI certification and a systematic diagnostic methodology that separates guesswork from science-based energy solutions. The team emphasizes that homeowners should verify where energy dollars are actually escaping before investing in furnace replacements or window upgrades. The company notes that customers frequently discover energy upgrades achieve payback through utility savings within one to five years, making the initial assessment an investment that protects subsequent improvement spending.
Homeowners who worked with Casey King report thorough explanations of the science behind their house-specific recommendations, with one client noting Casey went above and beyond to walk through every technical question. Another review describes Zach taking time each day to demonstrate and explain completed work, including discovering and removing an ant nest during band joist sealing and arranging a licensed electrician to repair a previously non-functioning kitchen switch at no charge. The team drilled over 120 access holes in one older Lancaster home, dense-packing cellulose insulation into walls while installing spray foam in the basement, with the homeowner reporting immediate improvement in warmth and consistency throughout the entire structure.
All 144 five-star reviews specifically mention the professionalism and respect demonstrated by crew members, with technicians Casey, Zach, and team leads frequently named as the reason for the positive experience. Multiple reviewers highlight that the company brings in licensed electricians to repair unexpected issues discovered during insulation work at no additional cost.
| Sunday | Closed |
| Monday | 8 AM–5 PM |
| Tuesday | 8 AM–5 PM |
| Wednesday | 8 AM–5 PM |
| ThursdayToday | 8 AM–5 PM |
| Friday | 8 AM–5 PM |
| Saturday | Closed |
Comprehensive BPI-certified assessment evaluating insulation, air sealing, windows, and mechanical systems as an integrated whole.
Dense-packed cellulose installation through drilled access holes, effectively filling wall cavities and stopping thermal bridging.
Insulation upgrades combined with air sealing to prevent conditioned air from escaping into unconditioned attic space.
Foam board and spray foam application to band joists, rim joists, and foundation walls to eliminate major thermal gaps.
Spray foam application to the critical junction where foundation meets wooden framing, addressing a common source of energy loss.
Energy evaluations tailored for small commercial spaces and office buildings beyond residential applications.
Implementation of improvements identified during the assessment, including air sealing, insulation, and weatherization services.