Mathews Air Comfort Solutions is now Mathews CCAC!
(361) 235-3905 Request Service

Proper Ductwork Design Should Follow These Recommendations

February 12, 2013 | Blog

Proper ductwork design is one of the most important factors affecting your heating and cooling system’s efficiency. A knowledgable HVAC technician will use the Air Conditioning Contractors of America’s Manual D procedures to size the ductwork in your Coastal Bend home, but beyond that, there are a few other things the technician should do.

Make direct connections
– The delivery and return air systems should be hard ducted. This means ductwork, not building cavities, should provide a direct connection for air delivery. Formerly, building features such as wall stud spaces were sometimes used instead of ducts, but building codes now prohibit this inefficient technique.

Plan the return side – A central return system should include return grilles on each level of the house. Ideally, every room with a door and two or more supply outlets should have a return grille. A room with a door and no return grille requires a transfer grille or jumper duct.

Use conditioned spaces
Proper ductwork design calls for ducts to be installed in conditioned spaces when possible. Ducts carry conditioned air less efficiently when they pass through unconditioned spaces such as the basement or crawl spaces. Installing ducts in exterior walls also reduces ductwork efficiency. Ducts in unconditioned areas need more insulation than those in conditioned areas.

Keep ducts short
– The less distance conditioned air travels, the less opportunity it has to leak out of the ducts. In some homes, installing supply outlets near the interior walls is one option for keeping ducts short.

Connect ducts carefully –  Duct sections shouldn’t be merely pushed together, which allows them to leak air. Instead, they should be connected with sheet-metal screws for metal ducts or nylon duct straps for flex-ducts. Joints should then be sealed with mastic.

Keep supply outlets clear
– Supply outlets should be placed far from bathroom or kitchen exhaust vents so the vents don’t draw in conditioned air delivered by the supply outlets.

For more guidance on proper ductwork design and other heating and cooling issues, please contact us at CCAC, Inc., where we’re Constantly Concerned About Customers. We provide HVAC services you can count on in Corpus Christi and throughout the Coastal Bend.

Our goal is to help educate our customers in Corpus Christi, Texas about energy and home comfort issues (specific to HVAC systems).  For more information about ductwork design and other HVAC topics, download our free Home Comfort Resource guide.

Image courtesy of Shutterstock

Constantly Concerned About You!

noun_team_2578407
Professional Team
Our ac technicians are highly trained, professional and committed to getting the job done right the first time.
noun_assurance_426752
Reliable Service
You can count on our expert ac technicians to provide high-quality air conditioning services with quality products and transparent pricing.
noun_Handshake_2064250
Customer Service
You deserve excellent customer service. That's why we strive to be courteous and professional through the entire service process.

What Our Customers Are Saying

Pleasure to Work With

Mathews CCAC conducted the semi-annual inspection of the A/C, heating system for the fall check-up, Technician was on time, courteous and went quickly about the inspection and observed all COVID-19 protocols for his and our safety a pleasure to work with this company

Steven L.

Great Company

Great company. Contacted my current AC company to check on my warranty before charging me anything. Saved me a bunch of money and headache if dealing with anything. Would definitely recommend them and use them again.

Ryan W.

Very Satisfied

I’ve had a system purchased and installed by them for several years with the maintenance contract the whole time. I’ve been very satisfied with the service. You can’t go wrong selecting them for your business.

Joseph S.