Heat & Cooling Load Calculation Service

Often referred to as a Manual J, a proper design of any HVAC project requires knowing the heating load or cooling load. The heating load is the number of BTUs required in the coldest day of the year in your region to keep the house at its design set point temperature.

Our calculation service ensures that the equipment for your project is sized correctly – and is based on many factors. An improperly sized system could mean a house that can’t keep warm in a cold winter, or an oversized system that leads to higher upfront and operating costs than required.

Getting this right is important!

Manual J Design Service

Manual J
Design Service

We provide this service FREE of charge to all customers that purchase a packaged heat pump system from us. (note there is a small upfront fee, but this is credited back to you on your purchase invoice).

The process involves you uploading your building plans and reviewing them with our certified Heat Load Designer, who then provides you with a design analysis.

$.10 per Square Foot

Connect with an Arctic
Heat Expert

No one knows air to water heat pumps like we do!

Have questions about our energy-efficient heating solutions? We're here to help! Whether you need product details, installation support, or assistance with an order, our team is ready to assist you.

Get in touch, no matter where you’re at in your project plans. We’d be so happy to help!

Frequently Asked Questions

What exactly is a Manual J heat and cooling load calculation?

A Manual J calculation is an industry-standard assessment used to determine the precise heating and cooling load of your building. It calculates the exact number of BTUs needed to maintain your desired indoor temperature during the coldest or hottest days of the year.

Why is proper HVAC equipment sizing so important?

Getting the right size for your heat pump is crucial for both indoor comfort and energy efficiency. An undersized system will struggle to heat your home during a cold winter, while an oversized system results in unnecessarily high upfront equipment costs and increased daily operating expenses.

How much does your Manual J design service cost?

Our professional heat load calculation service is priced at $0.10 per square foot of your building's area.

Is there a way to get the hydronic design service for free?

Yes! We offer this Manual J design service completely free of charge when you purchase a packaged heat pump system from us. While there is a small upfront fee to begin the process, it is fully credited back to you on your final equipment purchase invoice.

How does your HVAC design process work?

The process is simple: first, you upload your home's building plans. Next, you will review your project directly with our certified Heat Load Designer, who will then generate and provide a comprehensive design analysis tailored to your specific hydronic heating or cooling needs.

What documents are required to start my heat load calculation?

To provide an accurate design analysis and precise equipment sizing, you simply need to upload your detailed building plans or architectural blueprints so our designers can assess the specific dimensions and layout of your property.

Who will be calculating my home's heating and cooling loads?

Your Manual J calculation and hydronic heating design will be performed and reviewed directly by one of our in-house certified Heat Load Designers, ensuring professional and accurate HVAC sizing for your project.

What happens if I skip the heat load calculation and guess my heat pump size?

Guessing your HVAC size often leads to an improperly sized system. If it's too small, your house won't stay warm. If it's too large, it will "short-cycle" (turn on and off too frequently), which reduces the lifespan of the equipment, fails to properly dehumidify the air, and inflates your utility bills.