COVID-19
Safety Measures

back to blog

Best Practices of Ductwork Design

If you are designing a new home or retrofitting areas in your current home, you certainly want and expect your contractors to use best practices of building science. The same is true for your ductwork system. Though, that wasn’t always the case when it came to construction. Read on to learn what you need to know about the tubes that carry the cooled and heated airflow that keep you comfortable.

Metal, Fiberglass, or Plastic?

Ducts are traditionally fabricated from thin sheet metal. In recent years and decades, flex ducts and plastic are often used. Many older homes use cavities inside walls, floors, and the ceiling as airways. Make sure all of your air ducts are installed using actual industry-approved materials.

Location and Insulation

The fewer turns and splits your conditioned air must travel through, the more efficient your ductwork system will be. This translates into lower energy bills and greater comfort. Ducts should take the shortest route possible from the air handler to the outlet. Conditioned areas, such as raised floors and chases, are preferable. Ducts located in unconditioned spaces should be insulated.

Sealing Materials

Cloth “duct” tape, as it’s called, should never be used to seal ductwork. It will peel and fall away very quickly. Your HVAC contractor should only use industry-approved sealing materials, such as metal tape, mastic sealant, clasps, and aerosol sealant.

Sizing Ductwork

If your contractor is sizing your duct system (or heating and cooling systems) based on the square footage of your home, find a different contractor. There are dozens of variables that affect heat gain/loss on all sides of your home. Your ducts should be sized using software based on Manual D principles outlined by the Air Conditioning Contractors of America.

Balancing and Testing

Once your ducts have been installed, sealed, and insulated, they should be tested for balance and tightness. Any leaks should be resolved and airflow to each outlet and through your home should be in balance.

We have extensive experience in the home comfort field and we are prepared to provide you with any assistance you may require.

Reach out to a Team Member Today!
Contact Us Today!

Subpage Sidebar Form

0% Financing Special No Tricks, All Treats! Includes no payments for 24 months + a 10 year extended warranty OR a 10% instant rebate on a new HVAC system*. *Valid for select HVAC systems only. Call for details. Expires 10/31/2020. Redeem Now
$250 Off Air Scrubber Destroy up to 99% of surface & airborne contaminants in your home. Call today for more details! Can not be combined with any other offers or promotions. Redeem Now
$25 Off Any Plumbing Service Repair Call today for more details! Can not be combined with any other offers or promotions. Redeem Now
$99 Off HVAC Service Fee Take $99 Off HVAC Service Fee When Repair Takes Place At Time Of Diagnostic. Can not be combined with any other offers or promotions. Redeem Now
$69 AC and Furnace System Checkup Keep your AC and furnace running at peak efficiency • Prevent costly breakdowns • Extend the life of your AC and furnace • Inspect your equipment to make sure it’s not leaking dangerous carbon monoxide. Can not be combined with any other offers or promotions. Redeem Now

We Can Help Simplify Your Home's Maintenance!

When you join the VIP Comfort Club at Sherlock Plumbing, Heating & Air, our Carlsbad home service experts will take care of maintaining your home’s most important systems so you can relax and enjoy not having to stress about problems with your heating, cooling, or plumbing!

Top Rated Customer Reviews

See What Your Neighbors Are Saying

Top Rated Customer Reviews

See What Your Neighbors Are Saying

Outstanding experience from start to finish. Neil was on time, professional, and very personable when he came the same day to assess my needs and provide an on-the-spot estimate. He didn't try and pre...

Jeff L.

Extremely pleased with the quick and professional service we received today! Our 14-year-old AC unit went out last night, i called this morning and a technician came out this afternoon. The fix was re...

Christine F.

Sherlock continues to be there for my family when we need them the most. I had a new HVAC system installed May of 2019, since then the service techs have come in for their seasonal inspections and I c...

Nick B.

Anthony, came to inspect the plumbing in my house as well as to drain and refill the water heater. I found him to be very informative and helpful, as well as professional and friendly. I was really ve...

Pam C.

Our water heater started leaking and a call to Sherlock was met with a same day response. Neil came out to explain our options of tank/tankless, gas/electric. He walked us through the pros and cons of...

Lorraine G.

This has been the best experience with a company we have ever had in our 50 plus years of marriage. From Vincent to Eric and his whole crew this was a very difficult project for everyone. They handled...

Roy S.

Hands down, these guys are the best. I had bids from three other highly rated HVAC companies in North County and none of them came close to the technical knowledge and professionalism of Sherlock. My ...

Kent C.

Sherlock is the coolest! As always, Yelpers are right on. Basing my picks on high stars and number of reviews, I called four companies. Right off the bat, I knew one company wasn't even an option due ...

J.C

This is a review not so much for Sherlock, but for Fred Radtke - the young man that came and got my heater working. He not only installed a new thermostat on the spot that is easier to read - and repl...

Barbara W.

Eric came out to fix my non-working air conditioner. He was professional, very nice, honest, knew his stuff. He had to over to Escondido to get the proper part, and returned on same afternoon, put the...

Seasides C.

Justin the sales agent, was great, very patient and responsive. The gentlemen who came in to work on the installation were great, explained everything and very respectful and clean. I had the unfortun...

M A.

Jared was our inspector and he showed up on time with a 30 min courtesy call. He was efficient and gave us an honest opinion of what was working and what needed to be repaired or replaced or serviced ...

Erica B.

Ahhh! Cool and comfortable in our house now. Thank you to the awesome guys who installed this high quality equipment. Good to have Costco stand behind them, too.

Susan F.

There is a reason this place has nothing but five stars. They earn it! I have had no AC in the house and was procrastinating on getting it fixed due to the cost and lack of need most of the year. I wa...

Wendy H.

JR, JoJo, and Eric came to my condo yesterday to install my HVAC system and Heat Pump. They were very meticulous and on task for the whole installation, and kept me informed as to what they were doing...

George M.

I had a great experience with Sherlock, from start to finish! Justin met with me and spent a few hours walking me through the current condition of my system and what Sherlock can offer. I had budget l...

Vinay R.

My experience with Sherlock Heating & Air has been amazing from the start when I first got my new heating & air conditioning system!!! They know how to deliver customer service!! They are hone...

Deborah L.

The tagline for Yelp's 5 star rating of "Woohoo! As good as it gets!" is 100% fitting for the work and professionalism of Jared and Enoch. They were courteous and upfront with the entire job. I found ...

Bryce H.

Just had an ACHP service done yesterday on the two units in my home. Their service rep was Jared Pratt. This guy was great! He took the time to do it right and to explain to me (every step of the way)...

Doug F.

I came to Sherlock by way of the Nest website--checked out the Yelp reviews and then made the call. Eric M., the technician who installed my 3rd gen Nest Learning Thermostat was courteous, knowledgeab...

Nancy S.

Buying HVAC for an entire house is not an investment to be undertaken without some research. It's probably going to cost more than $15K and will require a crew of techs working in your house for sever...

Brian G.

FINALLY an AC & heating business I can trust!!! Woo-Hoo!!!! If Sherlock Heating and Air Conditioning isn't a small family business, you would think they are! They are so kind, meticulous, honest, ...

Tanya S.

If my wife and I could give 6 stars we would! Carlos, Jojo and Joe installed our new HVAC system today, 31st October 2016. Started the day at 8AM and ending roughly around 615PM. I was impressed by th...

Nathan R.

Called Sherlock based on reviews here, as we've had less than stellar experiences with other local area HVAC companies. They scheduled an appointment within a couple days, the guy who came out could n...

Hi D.

Been using Sherlock for a couple years. Jared and Eric came out for the yearly check/tune-up. Both were super friendly, informative, timely, and put on shoe protectors whenever they came in the house!...

Sarah E
Do NOT follow this link or you will be banned from the site!