# Having Ductwork Sealed? How Your Trusted HVAC Tech Tackles the Task

> Since most houses are built with ducts hidden, inspecting and sealing ductwork is a job that is better left to a professional HVAC contractor.

![ductwork](https://bc.rodenhiser.com/wp-content/uploads/2014/01/ducts.jpg)Leaky ductwork may be sapping warmth from your home this winter while running up your heating bills. A typical home might lose as much as 30 percent of its heated air (and cooled air in the summer) from leaking ducts before it reaches rooms in the house. Since most houses are built with ducts hidden in walls, attics and crawlspaces, inspecting and sealing ductwork is a job that is better left to a professional HVAC contractor. Here are some of the things your HVAC technician will do to ensure that your ductwork delivers conditioned air where it's needed:

![ductwork](https://bc.rodenhiser.com/wp-content/uploads/2014/01/ducts.jpg)

- **Visual inspection.** Your HVAC tech will look for leaking seams, gaps between duct connections, kinked flexible ducts, duct sections that need insulation, and places where vents and registers are not tightly connected at ceilings, walls and floors.
- **Airflow balance evaluation.** Your tech will perform tests to make sure supply and return air are in balance. This will help find leaks and determine whether return air ducts are large enough for your system. Your tech also will ensure that there's no backdrafting of potentially [hazardous gases](https://bc.rodenhiser.com/rodenhiser-blog/co-poisoning.html) from your furnace flue.
- **Replace filter and seal vent connections.** Your technician will replace your [air filter](https://bc.rodenhiser.com/rodenhiser-blog/air-filter-replacement.html) and ensure that the filter slot does not allow air to leak around the filter. He will seal connections where vents and registers exit the walls, floors and ceiling.
- **Repair and replace ducts as needed.** Sheet-metal screws, clamps, metal tape and mastic sealant are all tools your tech might use when sealing ductwork. Competent contractors will never use gray "duct tape" for sealing ductwork since it deteriorates quickly. Loose connections will be fastened tightly and sealed to prevent air leaks. Kinked flex ducts will be straightened or replaced as needed.
- **Insulate ducts.** Anywhere your ducts run through unconditioned spaces such as your attic, they will need to be [insulated](https://bc.rodenhiser.com/rodenhiser-blog/proper-insulation.html) to prevent energy losses.
 

Call us at [Rodenhiser Plumbing, Heating & Air Conditioning](http://rodenhiser.com/call-rodenhiser.html) for expert ductwork repair anywhere in the Route 495/128 area of Massachusetts. We will help you keep your home comfortable and energy efficient.

 *Image via [Shutterstock.com](http://Shutterstock.com)*

## Navigation

- [Rodenhiser Home Services](https://bc.rodenhiser.com/)
- [Rodenhiser Plumbing Services](https://bc.rodenhiser.com/plumber-framingham.html)
- [Rodenhiser Heating Services](https://bc.rodenhiser.com/furnace-framingham.html)
- [Rodenhiser Cooling Services](https://bc.rodenhiser.com/air-conditioning-framingham.html)
- [Rodenhiser Electrical Services](https://bc.rodenhiser.com/framingham-electricians.html)
- [Rodenhiser Home Services: Book Online](https://bc.rodenhiser.com/call-rodenhiser/book-online.html)
- [Rodenhiser Remodeling Services](https://bc.rodenhiser.com/remodels/bathroom-remodeling-framingham.html)
- [Rodenhiser Home Services: Reviews](https://bc.rodenhiser.com/rodenhiser-heating.html)

## Company information

- Rodenhiser Home Services
- [https://bc.rodenhiser.com](https://bc.rodenhiser.com)

**Licences:** 
- Master Plumber: #10961
- Corporate Plumbing: #2288
- Master Electrician: #23917A
- Electrical Business: #4804
- Master Sheet Metal (Unrestricted): #5867
- Corporate Sheet Metal: #641
- Home Improvement Contractor: #188806


## About Rodenhiser Home Services

**Rodenhiser Home Services** is a family-owned, licensed and insured home services company based in **Massachusetts, USA**, serving residential and commercial customers throughout the METROWEST MA region. Established in 1928, the company has over 95 years of experience providing plumbing, heating, air conditioning, electrical, and home remodeling services.

Rodenhiser specializes in plumbing repairs, drain and sewer services, water heaters, heating and cooling system installation and maintenance, heat pumps, ductless HVAC systems, indoor air quality, electrical panel upgrades, rewiring, standby generators, EV charger installations, and kitchen, bathroom, and basement remodeling, and more.

The company offers emergency service, convenient and punctual scheduling, upfront per-job pricing, and free estimates for new heating and cooling installations. All work is backed by written warranties and a satisfaction guarantee. Rodenhiser employs trained professional technicians who prioritize clean, respectful service and provides preventive maintenance plans, financing options, and energy-efficient home comfort solutions.

Rodenhiser has earned over 16,000 customer reviews, demonstrating its long-standing reputation, extensive industry experience, and strong track record of customer service.

**Nice People…Great Service**

## Page information

- [Canonical URL: https://bc.rodenhiser.com/rodenhiser-blog/ductwork-sealed.html](https://bc.rodenhiser.com/rodenhiser-blog/ductwork-sealed.html)