Fraud Blocker
Skip to content
  • Request Service
  • Client Login
(205) 326-7268
Paradise Heating and Air | HVAC Birmingham Alabama
  • ServicesExpand
    • Air Conditioning


      Air Conditioning Repair
      Air Conditioning Replacement
      Air Conditioning Installation

      Heating Services


      Heating Repair
      Heating Replacement
      Heating Installation

      Other Services


      Attic Insulation And Ventilation
      Indoor Air Quality Solutions
      Duct Repairs And Replacement
  • AboutExpand
    • Blog
    • Service Area
  • Contact
Facebook Yelp Google Reviews

Financing Available

HVAC Financing Birmingham AL
Heating and Air Financing Birmingham AL
(205) 326-7268
Paradise Heating and Air | HVAC Birmingham Alabama

HVAC Financing Available | HVAC Repair Birmingham AL

Heat Load Calculation

« Back to Glossary Index

A heat load calculation is a method used to determine how much heating or cooling a space requires to maintain a desired indoor temperature. This process considers factors like the size of the space, the number of windows and insulation levels, the climate, and how the space is used. The result helps determine the appropriate size (or tonnage) of the HVAC system needed for optimal efficiency and comfort. Performing a heat load calculation ensures that the HVAC system is neither too large (causing inefficiency and higher costs) nor too small (leading to inadequate heating or cooling) for the space.

Related Articles:
  • Glossary: Manual J
« Back to Glossary Index

© 2026 HVAC Birmingham, AL | Paradise Heating and Air | Website and Marketing by Cahaba Digital | AL License 22158

Danna Jones
Danna Jones

just left us a 5 star review

on
google
12 months ago  
Danna Jones
google
Danna Jones

Great service - always on time and very professional.

Cassandra Moore
google
Cassandra Moore

Always on time and very well please explain everything that they did

Jessica VanLandingham
google
Jessica VanLandingham

He was on time and got the insulation job done quickly. I had contracted with another company who no-showed twice, so being able to call Paradise and get it done within a short time was great.

Cory Wynn
google
Cory Wynn
Chris Holland
google
Chris Holland

Jonathan and the whole Paradise staff are professional, courteous, and fast. I had a system failure, and they were able to get to me quickly and diagnose the problem. Through Jonathan's research he discovered my system had a warrantied part needing replacement and saved me $1600. I would HIGHLY recommend Jonathan and the Paradise crew and will be using again!

Amanda Horsley
google
Amanda Horsley

I had to leave another review for this company because we continue to be very impressed. Jonathan is an absolute pleasure to work with.

Sam Sharples
google
Sam Sharples

Very prompt, respectful, thorough, and didn’t break the bank.

Nichole Pompey
google
Nichole Pompey

Johnathan and his son came out quickly and repaired my air conditioner. He explained very clearly what the issue was and temporarily fixed my air while we waited on the warranty part from the manufacturer. Service and hospitality was excellent!

Joshua Woodall
google
Joshua Woodall

Jonathan provided excellent service and was extremely knowledgeable. He had our heat up and going in no time and also helped us with setting up functions on our thermostat while he was here!

VWC
google
VWC

Amazing service and very helpful as well as willing to inform me of what was going on.

Christine Wilcox
google
Christine Wilcox

They were great. Came out on a Thursday and looked at my system. Went over all of my options of repairs or replacements. Explained both the advantages and disadvantages of both options in detail so I could make an informed decision. Came back out the following Monday to do the work. Very friendly and knowledgeable staff.

Buckley Rose
google
Buckley Rose

Awesome customer service. Exceeded my expectations compared to past experiences with different companies

Rex Murphy
google
Rex Murphy

Excellent service, on a Sunday, highly recommend :)

Michael Semon
google
Michael Semon

Great service, very professional! Highly recommend.

Misty Hughes
google
Misty Hughes

I had my new unit installed about a week ago. Johnathan was the best. It was effortless , perfect workmanship , on time. Explained everything! Thank you Paradise !! FIRST RATE. TOOK CARE OF ME ASAP. WILL USE IN FUTURE FOR NEW UNIT

John Wills
google
John Wills

Great company to work with AGAIN! The minor issues found were carefully explained and resolved. We setup a biannual service plan to keep this 20 yr old house in tip top shape. This is the company you need to handle your HVAC needs.

B. Keith Putt
google
B. Keith Putt

Excellent company! Jonathan and Matt were professional, friendly, and extremely efficient. They had my HVAC system replaced in 4 hours! If my other unit ever bites the dust, they will be the ones I call for a new one!! I highly recommend them.

Yan Zhu
google
Yan Zhu

Jonathan came by and discussed my problem with me. He was professional and gave me helpful suggestions. He did not even charge me for his time. It was a pleasure to work with them, please give the company a try.

Irv Fietz
google
Irv Fietz

Jonathon provides excellent service! Shows up on time, no mess, good at explaining the problem and does high quality work.

Nicole Dent Travels
google
Nicole Dent Travels

These guys got the job done! Came in did not try to sell me a unit but fixed my existing unit and I appreciate them so much bc it was the hottest day of the year and my unit was completely out. I recommend 💯

Pam Cain
google
Pam Cain

Great, fast and professional service always!!

Andrea Martin
google
Andrea Martin

5 stars! Look nowhere else for all of heating and cooling needs. Jonathan is amazing - experienced, reasonable and reliable. Look nowhere else!

Katherine Marshall
google
Katherine Marshall

Extremely nice, on time, helpful and explanatory. Very professional. Thank you

Marianne Herman
google
Marianne Herman

Jonathan is highly technical, knowledgable, and efficient. I wish I had known his company years ago. I highly recommend Paradise for all heating and air needs.

Steve S
google
Steve S

I had paradise come out to get me started with their paradise maintenance package, and had them take a look at my attic because we had concerns with our insulation not being adequate. They didn’t try to over sell work I didn’t need, and were honest with what exactly was needed to get us back on track. Techs Jonathan and Matthew came out for the initial inspection and service and came back to do the attic insulation. They were patient and knowledgeable (I ask a lot of questions) and took their time. They found all the places that my system was leaking (out and in) air, fixed them, and then filled the attic. They kept the house clean and were respectful and had great attitudes the entire time. They have definitely earned my business, and I would recommend them to anyone looking for HVAC work. They are AWESOME!

Perry Koonce
google
Perry Koonce

Jonathan provided another on-time, courteous and professional annual maintenance service call. Paradise Heating and Air provides great service at a great value.

Kevin
google
Kevin

Thank you Paradise Heating and Air for your quick response, great customer service and fair price!

Melanie Zumm
google
Melanie Zumm
Donna Butler
google
Donna Butler

On time. Responsive. Seemed confident with expertise. Explained issues well. Serviced and repaired older ac system and did not try to sell me a new one. Kept everyone cool for Mothers Day.

Karen
google
Karen

Johnathan was great! We had a moisture problem in our kitchen cabinets that were on an interior wall. He spent a good amount of time figuring out what was going on, gave us a solution and answered all of our questions. A very good experience!

SteelCityScreenPrint
google
SteelCityScreenPrint

Paradise answered my call late at night and made me an appointment for first thing in the morning and even showed up early. They crawled under my rental house through the dirt and mud to inform me that my landlord had me living in a dangerous environment. He was upfront and honest about everything and let me know the steps I needed to do to get my family out of this situation. No bandaid fixes from these guys, they do things in a professional manner and I couldn’t be more appreciative. Top notch customer service. Highly recommend!

samuel wilson
google
samuel wilson

Tech was on time, very professional, courteous, knowledgeable addressed my concerns about the system. Will definitely be recommending Paradise Heating and Air.

Carole Grimes
google
Carole Grimes

Called Paradise on a Sunday(Father's Day) and got a call back and service/ repair the same day. They explained what was needed and did the necessary repairs. I have a nice cool home again.

A.K. Powell
google
A.K. Powell

Scheduling was super easy and they were able to work me in quickly. Jonathan was so nice and explained things to me in a way I understood. They were also very quick but thorough

PARTHA GHOSAL
google
PARTHA GHOSAL

Very professional and knowledgeable. No need to look over their shoulder. Very satisfied with their work.

Melanie Kettle
google
Melanie Kettle

They scheduled me in a timely manner. The technician (Jonathan)was very professional, explained the system, and answered all my questions.

David Brainerd
google
David Brainerd

Jonathan did a great job. Highly recommended.

alphonse wilson
google
alphonse wilson
James Coco
google
James Coco

Jonathan to the rescue! A quick response saved us from a miserable night. Jonathan had us fixed in a matter of minutes! Highly recommend!

Sandy Hicks
google
Sandy Hicks

Being a first time customer I was extremely impressed with how punctual and professional the technicians are. I highly recommend Paradise Heating and Air

john DiOrio
google
john DiOrio

Jonathan and the Paradise team are the best. In my 50 yrs of home ownership, I haven't had anyone I've trusted more. My wife and I downsized recently, and Jonathan helped us upgrade old to new heating & air units, including thermostats and attic insulation. Paradise Heating & Air is a great company... glad we found them years ago.

Laurie Dunn
google
Laurie Dunn

Always knowledgeable, respectful, and right on time!

Michael Robinson
google
Michael Robinson

Jonathon and Christian did an excellent job! We would recommend them highly!

chip nieder
google
chip nieder

Always on time, easy to communicate, finest quality of workmanship and character, affordable pricing. Highly recommended.

Amy Graham
google
Amy Graham

Has spring service. Right on time, got it in good shape. Professional. Highly recommend!

Nancy Hollaway
google
Nancy Hollaway

Most honest, knowledgeable and affordable HAVC company I've ever dealt with.

Ken Little
google
Ken Little

Awesome Work! Great Experience with Jonathan and Paradise Heating and Cooling Great experience from Jonathan and Christian! Job: Disassemble and remove old attic ductwork and install new ductwork and runs. Install Accuclean air filter in both attic and main floor systems. Install new smart thermostat and attic insulation infill. 1. Honest assessment of what is needed and more importantly, what is not needed. And not just trying to sell the most expensive option. 2. Competitive and reasonable quote. 3. I asked about radiant heat treatment as an add on, but he said while they could do it, it would not have efficient results and not worth the investment since I had a high hip roof and large attic area. 4. Great work ethic and work product. Duct system, filtering system and thermostat expertly installed, set up and running effectively. 5. All interactions cordial, efficient and polite. 6. Punctual in accordance with automated notices about arrival and appointment reminders 7. Clean work - brought coverings to reduce tracking of insulation through house areas traversed. Cleaned any evidence of insulation. 8. Works relatively quietly. No loud talk or music. 9. Small footprint on street. One van. I expected van and trailer. New materials brought in, unloaded and installed while old duct system all loaded up and removed. Very efficient. Overall, fantastic experience and is highly recommended.

M Sewall
google
M Sewall

Paradise was very responsive and was able to come same day. Very professional, nice and honest - would recommend to anyone!

Kerry Coleman
google
Kerry Coleman

Jonathan was nothing more than stellar. Very engaging as well as very knowledgeable at his profession. I would highly recommend to anyone looking for HVAC services.

Gayle Wroclawski
google
Gayle Wroclawski

We've been doing a complete renovation of our family home of 30 years to sell and retire. We also needed to make sure we had adequate insulation and have the ductwork inspected. I called Paradise Heating and Air, and found that this was a service they could provide. They were very responsive. I had an estimate within a few days and the job completed the following week. They fixed anything that could become a problem and blew in the amount of insulation to meet the current Hoover building code. Jonathan was so friendly, explained everything that was done and the cost was very reasonable. In fact he talked me out of insulating an area that wasn't really needed!!! I couldn't be happier with the service, and feel good that everything is secure and to code. I highly recommend Jonathan and Paradise Heating and Air!!

(205) 326-7268

  • Client Login
  • Services
  • About
    • Blog
    • Service Area
  • Contact
  • Request Service
Facebook Yelp Google Reviews