Duct insulation that stops energy loss where it starts
Properly insulated ducts keep heated and cooled air at temperature from your HVAC system to every room. Energize CT rebates can cover 75-100% of duct insulation costs for eligible utility customers.
Your ducts may be costing you more than you realize
Energy escapes through unconditioned spaces. Ducts running through attics, basements, garages, and crawl spaces sit in extreme temperatures. Without insulation, heated and cooled air loses energy before it reaches your rooms — exactly where waste is highest.
Insulation puts that energy back to work. Insulating ducts cuts your HVAC system's workload, extends equipment life, and quiets the booms and cracks from ductwork. Our specialists match the right material to each run and seal leaks at the same time.
Most of the cost is often covered. Energize CT rebates can cover 75-100% of duct insulation costs for eligible utility customers — we handle the pre-approval and paperwork.
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Spray foam— excellent air sealing applied directly to ducts
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Batt/blanket wrap— wrapped around ducts, must be properly secured and sealed
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Rigid foam— a solid, energy-efficient barrier for larger duct sections and runs along walls or floors
What duct insulation delivers
Consistent temperatures room to room
Reduced HVAC energy consumption
Less ductwork noise and vibration
Cleaner air supply from sealed ducts
CT HIC License HIC #0644515 CT HTG License HTG #0303270-S1
Energize Connecticut — programs funded by a charge on customer energy bills.
What duct insulation does for your home
Well-insulated ducts maintain air temperature throughout the delivery path, reducing your heating and cooling system's workload and extending equipment life.
Duct insulation prevents conditioned air from losing temperature in unconditioned spaces. Energize CT recognizes insulation as one of the most cost-effective upgrades for lasting energy savings.
Insulated ducts reduce temperature swings between rooms and absorb operational noises from ductwork expansion and airflow.
Connecticut families trust HCP with their insulation
Materials and method
Choosing the right insulation for your ducts
Four materials, each chosen for the duct situation at hand
Location and accessibility drive the selection. Spray foam seals air leaks and insulates in one step on exposed runs; batt and blanket wrap covers accessible sections when secured tightly at seams; rigid foam board suits larger duct sections along walls or floors; blown cellulose is generally not recommended for ductwork as it can restrict airflow. Our team matches material to each run based on location, accessibility, and surrounding temperature extremes.
- Spray foam: seals and insulates exposed runs in one step
- Batt/blanket or rigid foam board for accessible and wall-run sections
- Blown cellulose avoided — it can restrict airflow in duct applications
Leaks get sealed before insulation goes on
Insulation alone does not fix leaking ducts. Conditioned air escaping through gaps defeats any wrap — so our specialists identify leaks with the HVAC system running, seal every connection with metallic foil tape and duct mastic, and only then insulate. The result is a delivery path that holds temperature from the equipment all the way to each room.
- Leaks identified while the system is running — no guesswork
- Every connection sealed with metallic foil tape and duct mastic
- Insulation applied after sealing, locking in real energy savings
Insulation rebates cover 75-100% of your project
Between Energize CT and federal tax credits, most CT families pay little to nothing for qualifying insulation work.
Energize CT insulation rebates
75-100% covered
As an Energize CT Authorized Contractor, HCP helps you access rebates funded by your utility bill. Your home energy audit copay is just $40.
- $2.00/sq ft insulation rebate
- 75-100% of total project cost covered
- Includes attic, wall, basement, and crawl space
Financing for insulation projects
Low-rate financing
For the portion not covered by rebates and credits, flexible financing helps you start insulating now.
- Smart-E Loan low fixed rates for energy improvements
- On-bill financing pay through your monthly utility bill
Insulate every part of your home
Each area has unique challenges. We match the right material and technique to each space.
Attic Insulation
The single biggest impact on home comfort and savings
Wall Insulation
Dense-pack or injection foam for existing walls
Basement Insulation
Stop moisture and heat loss below grade
Crawl Space
Encapsulation and insulation for forgotten spaces
Floor Insulation
Comfort underfoot and over unconditioned spaces
Duct Insulation
Seal and insulate ductwork to stop energy waste
Ceiling Insulation
Block heat loss through ceilings below unheated space
Foundation Insulation
Insulate foundation walls and rim joists at the base of the home
Need guidance?
Our team can answer any questions about duct insulation during your free estimate.
Find out what duct insulation can do for your HVAC efficiency
Call or schedule online — free estimates for duct insulation projects across Connecticut.