How do I know if my air ducts are properly sealed after repair?
Why Proper Duct Sealing Matters After Repairs
Energy Efficiency and Cost Savings
Enhanced Home Comfort
Improved Indoor Air Quality
Our Trusted Partners
EXCELLENT Based on 1240 reviews Kathy WolfeTrustindex verifies that the original source of the review is Google. Ashante Coleman was very professional answered any questions I had. I felt very satisfied with my service. Francina WilliamsTrustindex verifies that the original source of the review is Google. Arrived at the time designated. Checked everything, did not take all day. Very polite and thorough.
Owner's reply
Thank you so much for the 5 stars! We're glad you're happy with our service. Steven StubbsTrustindex verifies that the original source of the review is Google. AJ was very prompt and diligent in finding my AC problem. Extremely professional and easy to work with. Your organization should be proud to have AJ on your team! Dominica CampbellTrustindex verifies that the original source of the review is Google. Lou was great. Explained everything and very professional. Richard WeyantTrustindex verifies that the original source of the review is Google. We’ve used automatic climate for regular maintenance of our HVAC systems as well as the replacement of an old unit and duct cleaning. From salesman to technician, they have always been professional, courteous, and honest. They explain my options and let ME make an informed decision. Their prices are reasonable, especially for the quality of work performed. Amanda ATrustindex verifies that the original source of the review is Google. Lou came out today for our hvac tune up & was great! Very informative and friendly. Will definitely use them again when it’s time for our next tune up or any repairs. Ryan LancasterTrustindex verifies that the original source of the review is Google. Lou did a fantastic job lisa thanadarTrustindex verifies that the original source of the review is Google. Yet again, I have nothing but good things to say about my experience with Automatic Climate’s service. AJ did a great job.
Owner's reply
Thank you so much for this great 5-star review. We really appreciate your business! EmmersonTrustindex verifies that the original source of the review is Google. I have a contract for regular cleaning with Automatic Cleaning. I’ve had great experiences with all their staff- super friendly, easy to schedule, they are always on time and well educated. Ashante, in particular, was amazing! She took the time to explain and outline all my options. TheusTrustindex verifies that the original source of the review is Google. The technician was great. Friendly and knowledgeable and helpful.Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
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$39 A/C
Tune-Up!
Take advantage of this limited time offer. Keep your home cool this summer with Automatic Climate!*
*Expires 12/30/25. Offer can’t be combined with other offers or promotions. Offer valid for existing and new clients.

$50 OFF Air
Duct Cleaning
Save $50 on your next air duct cleaning service for a limited time!*
*Expires 12/30/25. Offer can’t be combined with other offers or promotions. Offer valid for existing and new clients.

$49 Water
Heater Flush
Take advantage of this $49 water heater flush and make sure your water is heating properly!*
*Expires 12/30/25. Offer can’t be combined with other offers or promotions. Offer valid for existing and new clients.
Extended HVAC System Lifespan

Telltale Signs Your Duct Sealing Might Be Compromised
1. Uneven Temperatures Between Rooms
2. High Energy Bills
3. Excessive Dust
4. Visible Duct Damage or Disconnections
5. Strange Noises
6. Poor Airflow from Vents
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Signs Your Duct Sealing Might Need Attention
DIY Checks vs. Professional Duct Sealing Verification
Simple DIY Inspections
The Limitations of DIY Checks
While these DIY steps can identify major, obvious problems, they have significant limitations:
- Inaccessibility: Much of your ductwork is hidden within walls, floors, and ceilings, making visual inspection impossible without demolition. Significant leaks often occur in these hidden areas.
- Small Leaks Add Up: DIY methods are poor at detecting numerous small leaks, which collectively can account for substantial energy loss. Proper duct sealing addresses these comprehensively.
- Quantification Issues: DIY checks can’t measure the *total* leakage rate. You might find *a* leak, but you won’t know if the overall system meets acceptable standards for duct sealing.
- Safety Concerns: Navigating attics and crawl spaces can be hazardous. Working near HVAC equipment also carries risks if you’re unfamiliar with it.
When to Call the Professionals
Professional Methods for Confirming Duct Sealing Integrity
Duct Leakage Tester (Duct Blaster® Test)
This is the industry standard for quantifying duct leakage. The process generally involves:
- Temporarily sealing all supply registers and return grilles throughout the house.
- Connecting a calibrated fan (the “Duct Blaster”) to the duct system, usually at the air handler or a large return opening.
- Pressurizing (or depressurizing) the entire duct system to a standard pressure, typically 25 Pascals (Pa). This pressure difference simulates the operational pressure within the ducts.
- Measuring the amount of airflow (in cubic feet per minute, CFM) required by the fan to maintain that standard pressure. This airflow measurement represents the total leakage rate of the duct system (often referred to as CFM25).
The results of this HVAC duct testing provide a precise measure of how airtight your ducts are. Technicians compare this CFM25 number against industry standards or local building codes to determine if the duct sealing is adequate. A test performed after air duct repair can confirm its effectiveness. Quality duct sealing results in a low CFM25 reading.
Smoke or Fog Testing (Pressurized)
Thermal Imaging
Maintaining Ductwork Integrity: Post-Sealing Tips
What Constitutes “Properly Sealed”? Understanding the Standards
Beyond the numbers, proper duct sealing also involves using the right materials and techniques. Reputable professionals like those at Automatic Climate will use:
- Mastic Sealant: A gooey substance applied generously over joints and seams. It remains flexible and provides a durable, long-lasting seal.
- Metal-Backed Foil Tape: Specifically designed for HVAC applications (like UL 181 tape). It adheres strongly and withstands temperature fluctuations.
- Proper Mechanical Fasteners: Screws or clamps at connections before sealing ensure structural integrity.
- Aerosolized Sealants (e.g., Aeroseal): An advanced technique where sealant particles are blown into the duct system under pressure, automatically finding and sealing leaks from the inside. This method often achieves very tight duct sealing results.
Conversely, plain cloth-backed “duct tape” should *never* be used for sealing ducts. It degrades quickly under temperature changes and fails, negating any duct sealing effort. Seeing this tape is a red flag. Effective duct sealing relies on correct materials and skilled application, often involving comprehensive air sealing techniques.
The Long-Term Benefits of Confirmed Duct Sealing

Taking the step to verify your duct sealing after a repair isn’t just about fixing a potential immediate problem; it’s an investment that pays dividends over the long term.
- Sustained Energy Savings: Properly sealed ducts minimize wasted energy month after month, year after year, leading to consistently lower utility bills and a quicker return on your repair investment. This is key to long-term improve energy efficiency.
- Consistent Home Comfort: Enjoy reliable heating and cooling in every room, eliminating frustrating hot and cold spots. Verified duct sealing equals consistent comfort.
- Healthier Indoor Air: By preventing the infiltration of dust, allergens, and pollutants from unconditioned spaces, effective duct sealing contributes significantly to better home air quality and a healthier living environment.
- Reduced HVAC Strain: An efficient duct system allows your heating and cooling equipment to operate as designed, reducing wear and tear and potentially extending its operational lifespan, saving you from premature replacement costs. Good duct sealing protects your HVAC investment.
- Peace of Mind: Knowing that your duct system has been professionally tested and confirmed to be properly sealed provides confidence that your home is operating efficiently and safely.
Effective duct sealing isn’t a one-time fix forgotten after repair; it’s fundamental to your home’s performance.
Ensure Your Ducts Are Sealed Right!
Case Study: The Difference Verified Sealing Makes
Automatic Climate: Your Richmond Partner for Duct Sealing Verification
Why Choose Automatic Climate?
- ✔ Experienced Technicians: Our team is highly trained in all aspects of HVAC systems, including advanced duct sealing and testing techniques.
- ✔
- ✔ Comprehensive Services: From air duct cleaning and repair to new installations and maintenance, we handle all your HVAC needs. Excellent duct sealing is part of our comprehensive approach.
- ✔ Customer Satisfaction Focus: We stand behind our work. Check out our customer reviews and learn about our satisfaction guarantee. We aren’t happy until your duct sealing meets high standards.
- ✔ Local & Trusted: As a long-standing Richmond business (About Us), we’re committed to serving our community with integrity. We prioritize proper duct sealing for our neighbors.
Frequently Asked Questions About Duct Sealing Verification
Further Reading & Resources:
Our Trusted Partners
EXCELLENT Based on 1240 reviews Kathy WolfeTrustindex verifies that the original source of the review is Google. Ashante Coleman was very professional answered any questions I had. I felt very satisfied with my service. Francina WilliamsTrustindex verifies that the original source of the review is Google. Arrived at the time designated. Checked everything, did not take all day. Very polite and thorough.
Owner's reply
Thank you so much for the 5 stars! We're glad you're happy with our service. Steven StubbsTrustindex verifies that the original source of the review is Google. AJ was very prompt and diligent in finding my AC problem. Extremely professional and easy to work with. Your organization should be proud to have AJ on your team! Dominica CampbellTrustindex verifies that the original source of the review is Google. Lou was great. Explained everything and very professional. Richard WeyantTrustindex verifies that the original source of the review is Google. We’ve used automatic climate for regular maintenance of our HVAC systems as well as the replacement of an old unit and duct cleaning. From salesman to technician, they have always been professional, courteous, and honest. They explain my options and let ME make an informed decision. Their prices are reasonable, especially for the quality of work performed. Amanda ATrustindex verifies that the original source of the review is Google. Lou came out today for our hvac tune up & was great! Very informative and friendly. Will definitely use them again when it’s time for our next tune up or any repairs. Ryan LancasterTrustindex verifies that the original source of the review is Google. Lou did a fantastic job lisa thanadarTrustindex verifies that the original source of the review is Google. Yet again, I have nothing but good things to say about my experience with Automatic Climate’s service. AJ did a great job.
Owner's reply
Thank you so much for this great 5-star review. We really appreciate your business! EmmersonTrustindex verifies that the original source of the review is Google. I have a contract for regular cleaning with Automatic Cleaning. I’ve had great experiences with all their staff- super friendly, easy to schedule, they are always on time and well educated. Ashante, in particular, was amazing! She took the time to explain and outline all my options. TheusTrustindex verifies that the original source of the review is Google. The technician was great. Friendly and knowledgeable and helpful.Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
Exclusive Promotions and Coupons

$39 A/C
Tune-Up!
Take advantage of this limited time offer. Keep your home cool this summer with Automatic Climate!*
*Expires 12/30/25. Offer can’t be combined with other offers or promotions. Offer valid for existing and new clients.

$50 OFF Air
Duct Cleaning
Save $50 on your next air duct cleaning service for a limited time!*
*Expires 12/30/25. Offer can’t be combined with other offers or promotions. Offer valid for existing and new clients.

$49 Water
Heater Flush
Take advantage of this $49 water heater flush and make sure your water is heating properly!*
*Expires 12/30/25. Offer can’t be combined with other offers or promotions. Offer valid for existing and new clients.