When we service your Furnace in Isanti MN, your satifaction means the world to us.
Repair, Maintenance & Replacements
Repair, Maintenance & Replacements
Keep your family warm this winter with expert furnace repair, furnace maintenance (tune-ups and safety inspections), and furnace replacements. As a licensed and insured full service HVAC and plumbing company, T M Johnson Bros. delivers the highest quality services to homeowners in Cambridge, Isanti, Mora and the surrounding East Central, Minnesota.
Comprehensive Furnace Repairs
When your heating system is not working properly (or not at all) — it's important that you rely on professionally trained technicians who carry Carbon Monoxide and Combustion Analysis certifications. Our technicians will arrive on-time, and carry the most common parts on their trucks which allow them to fix most problems right away. We'll get your system back up and running, quickly, safely, and always for a fair price. For your peace of mind, we back every furnace repair or service with our No-Risk, Money-Back Guarantee.
Furnace not working? Call for 24/7/365 Emergency Service or request service here.
Seasonal Furnace Maintenance

Manufacturers of heating systems, the EPA, and industry professionals recommend annual maintenance for your heating system to keep it running efficiently and safely. Our furnace maintenance service (more commonly called a premium tune-up) not only increases the efficiency and safety of your system but will also decrease your energy costs, reduce breakdowns, and promote longer equipment life.

Don’t be 'fooled' by a low price. Very often, low priced tune-ups that you see advertised are a quick inspection and little, if anything is being done to improve the performance of your system. Our premium furnace tune-up takes a full 1 to 1 ½ hours to complete, and we include an air flow analysis, combustion analysis, full heat exchanger inspection, and Carbon Monoxide test.

When you call to schedule your maintenance visit, ask how our Discount Maintenance Plan is the easy, cost-effective solution to furnace maintenance, and provides additional ways to save time and money.

Furnace Replacements & Installation
Although almost any HVAC company can sell you a system that will heat your home, T M Johnson Bros. professionally-trained and knowledgeable Comfort Advisors and installation technician's will design a heating system that will:
  • Deliver the maximum amount of comfort and energy efficiency
  • Be installed correctly, for maximum performance and long equipment life
Before recommending a heating system, our Comfort Advisor will complete an Analysis and Load Calculation of your home which includes addressing structural needs, comfort concerns, and evaluation of your current system and ductwork. We do extra work up front, to ensure that the system(s) we recommend are sized correctly, and that manufacturer and building code installation requirements will be meet.

Call or click to schedule a No-Cost, No-Obligation Furnace Replacement Quote that includes the Analysis and Load Calculation. The price we quote will include everything needed to replace your system — start to finish.

We back every furnace replacement or installation with our No-Risk, Money-Back Guarantee!
Need Financing? Ask about our financing options.