The Best Insulation Contractors in Lehigh Valley, PA

Compare the highest-rated insulation professionals in Lehigh Valley, Pennsylvania. All contractors are licensed, insured, and verified through our rigorous screening process.

#1

Werley Heating & Air Conditioning

4.8
(180 reviews)
Verified

A family-owned and operated business with a strong focus on whole-home energy efficiency solutions. They are highly regarded for their professional audits and comprehensive approach that combines insulation, air sealing, and HVAC services. Their expertise in managing projects for energy rebates is a significant strength.

2211 City Line Rd, Bethlehem, PA 18020

Specialties & Features

Energy efficiency audits
Attic insulation and air sealing
Spray foam insulation

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
#2

Home Mechanics, Inc.

4.7
(150 reviews)
Verified

Specializes in high-performance building techniques and energy conservation. They are a certified BPI (Building Performance Institute) contractor, which underscores their technical expertise in building science. They are known for detailed energy audits and effective air sealing and insulation upgrades.

1445 N Cedar Crest Blvd #315, Allentown, PA 18104

Specialties & Features

Blown-in insulation
Air sealing services
Insulation removal and replacement

Business Information

Years in Business:20 years
Licensed:Yes
Insured:Yes
#3

A. K. Lonergan Insulation, Inc.

4.6
(90 reviews)
Verified

A well-established, dedicated insulation contractor serving the Lehigh Valley for decades. They have a strong reputation for reliability and quality workmanship across a wide range of insulation types, particularly in both residential and commercial applications. Their longevity in the local market is a key indicator of stability and customer satisfaction.

2201 City Line Rd, Bethlehem, PA 18017

Specialties & Features

Spray foam insulation
Basement and crawl space insulation
Wall insulation services

Business Information

Years in Business:40 years
Licensed:Yes
Insured:Yes

Why These Are the Top Insulation Contractors in Lehigh Valley

The insulation market in Lehigh Valley is robust and competitive, driven by the region's mix of historic homes and new construction, as well as seasonal temperature extremes that make energy efficiency a priority for homeowners. The average quality of service is high, with several long-standing, reputable contractors who have deep roots in the community. Competition is strong, which generally benefits consumers through competitive pricing and a focus on customer service. Many top-tier providers are BPI certified and well-versed in local utility rebate programs, such as those offered by PPL and Met-Ed, adding significant value for customers. Typical pricing varies widely based on the project scope and insulation material. For a standard attic blown-in cellulose job, homeowners can expect to pay between $1,500 and $3,500. Spray foam insulation is a premium service, often ranging from $3,000 to $7,000 or more for a full attic, reflecting its superior air-sealing and R-value properties. Most reputable companies offer free, detailed estimates and energy audits to help homeowners understand their specific needs and potential savings.

High Ratings

4.7+ star average from verified customer reviews

Fully Licensed

All contractors are properly licensed and insured

Proven Experience

10+ years average experience in the industry

Local Experts

Familiar with Lehigh Valley regulations and climate

Frequently Asked Questions About Insulation in Lehigh Valley

Get answers to common questions about insulation services in Lehigh Valley, Pennsylvania.

1What is the best type of insulation for my attic in Lehigh Valley's climate?

For our climate with cold winters and hot, humid summers, blown-in cellulose or fiberglass is often the most effective for attics due to its ability to fill irregular spaces and provide a high R-value. The U.S. Department of Energy recommends attic insulation levels of R-49 to R-60 for our Pennsylvania climate zone (Zone 5), which is crucial for managing both heating and cooling costs. Proper air sealing of attic bypasses before insulating is also critical to prevent moisture issues common in our seasonal humidity.

2How much should I budget for a full attic insulation project in the Lehigh Valley?

Costs vary based on home size, material, and existing conditions, but homeowners in the Lehigh Valley can typically expect to invest between $1,500 and $4,500 for a professional attic insulation project to reach the recommended R-49 level. It's important to get multiple itemized quotes from local, certified contractors. Remember, Pennsylvania offers no sales tax on home insulation materials and labor, and you may qualify for federal tax credits for certain energy-efficient upgrades, which can reduce the net cost.

3When is the best time of year to have insulation installed in my Lehigh Valley home?

While insulation can be installed year-round, late summer and early fall (August-October) are ideal in the Lehigh Valley. This timing allows the work to be completed before winter's cold sets in, ensuring your home is sealed for peak heating season. It also avoids the extreme heat of mid-summer, which can make attic work challenging for crews. Scheduling during this period also ensures better contractor availability compared to the last-minute rush in late fall.

4What local credentials should I look for when choosing an insulation contractor in Pennsylvania?

Always verify that the contractor is properly licensed and insured in Pennsylvania. Look for certifications like the Building Performance Institute (BPI) certification, which indicates training in comprehensive home energy auditing and air sealing—key for our climate. Additionally, choose a contractor familiar with Pennsylvania's Uniform Construction Code (UCC) and one who is an approved installer for major manufacturers (like Owens Corning or CertainTeed), as this often comes with strong product warranties.

5My older Lehigh Valley home has drafty walls. Can insulation be added without major demolition?

Yes, for many historic or older homes in Bethlehem, Allentown, and Easton, dense-pack cellulose or injection foam insulation can be effectively installed in existing closed walls with minimal disruption. Small holes are drilled from the exterior or interior, the insulation is blown in, and the holes are patched. A professional energy audit with a blower door test is highly recommended first to identify the specific air leaks and moisture risks common in our region's older housing stock.