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Minnesota Energy Code Requirements for New Furnace Installation
Minnesota Energy Code Requirements for New Furnace Installation Minnesota has some of the most stringent energy codes for heating equipment in the country — which makes sense given our climate. If you're installing a new furnace, your contractor must comply with current state and local energy codes, and understanding what's required helps you ask better questions and avoid surprises. Minnesota Energy Code Overview Minnesota adopts and amends the International Energy Conservation Code (IECC) for residential construction. The Minnesota Department of Labor and Industry (DLI) administers these requirements. As of the... Read more...
HVAC Zoning vs. Multi-Zone Mini-Splits: Which Is Right for Minnesota Homes?
HVAC Zoning vs. Multi-Zone Mini-Splits: Which Is Right for Minnesota Homes? If you have rooms in your Minnesota home that are always too hot or too cold — a finished basement, a bonus room over the garage, or a home addition — you're probably considering a zoning solution. Two main options exist: adding zoning to your existing central system, or installing a multi-zone mini-split system. Here's how they compare. What Is HVAC Zoning? Traditional HVAC zoning divides your home into multiple zones, each with its own thermostat. Motorized dampers in... Read more...
Furnace Sequencer and Time-Delay Relay: What They Do and When They Fail
Furnace Sequencer and Time-Delay Relay: What They Do and When They Fail Modern furnaces use several timing and relay components to sequence the startup and shutdown process safely. Two that homeowners sometimes encounter in diagnostics are the furnace sequencer (primarily in electric furnaces) and the time-delay relay (found in gas furnaces). Here's what each does and how to identify when they're causing problems. The Time-Delay Relay in Gas Furnaces What It Does The time-delay relay (TDR) in a gas furnace controls the timing between the thermostat call for heat and... Read more...
Furnace Filter Types Compared: Fiberglass, Pleated, HEPA, and Electrostatic
Furnace Filter Types Compared: Fiberglass, Pleated, HEPA, and Electrostatic Walk into any home improvement store and you'll find an overwhelming number of furnace filter choices. The options range from $1 fiberglass panels to $50+ high-MERV electrostatic filters. Which one is right for your furnace? The answer isn't as simple as "buy the best one." Understanding MERV Ratings MERV stands for Minimum Efficiency Reporting Value — a standardized rating from 1–20 that measures how effectively a filter captures particles of specific sizes. Higher MERV = finer filtration = more particles removed.... Read more...
Goodman vs. Daikin Furnace: Are They the Same Thing?
Goodman vs. Daikin Furnace: Are They the Same Thing? If you've been researching furnaces, you may have noticed that Goodman and Daikin are both frequently mentioned — and wondered whether they're related. The short answer: yes, they're owned by the same parent company. But the longer answer has some important nuances for Minnesota shoppers. The Corporate Relationship Daikin Industries, Ltd. — a Japanese multinational and the world's largest HVAC manufacturer by revenue — acquired Goodman Manufacturing in 2012 for approximately $3.7 billion. Since then, Daikin has operated Goodman as a... Read more...
Furnace Blower Motor: Types, Failure Signs, and Replacement Cost
Furnace Blower Motor: Types, Failure Signs, and Replacement Cost The blower motor is the heart of your furnace's air distribution system. It's the component that moves conditioned air through your ductwork and into every room. When it fails — or works poorly — the entire comfort system suffers. Here's everything Minnesota homeowners need to know about furnace blower motors. What the Blower Motor Does The blower motor drives the squirrel-cage blower wheel that draws return air from your home, pushes it across the heat exchanger, and delivers warm air to... Read more...
Furnace Emergency in Minnesota: What to Do When Your Heat Goes Out
Furnace Emergency in Minnesota: What to Do When Your Heat Goes Out It's January in Minnesota. It's -15°F outside. Your furnace just stopped working. This guide is written for exactly that moment — a step-by-step action plan to keep your family safe, diagnose the problem quickly, and get heat back as fast as possible. Immediate Safety First Before troubleshooting anything, make sure your family is safe: Check CO detectors. If any CO detector is alarming, evacuate immediately, call 911, and do not re-enter until cleared by emergency responders. Know your... Read more...
How to Choose an HVAC Contractor in Minnesota: 10 Things to Check
How to Choose an HVAC Contractor in Minnesota: 10 Things to Check Choosing the wrong HVAC contractor is one of the most expensive mistakes a Minnesota homeowner can make. A bad installation on a good furnace can mean 15 years of problems, inefficiency, and unnecessary repairs. Here's a practical checklist for vetting HVAC contractors before you sign anything. 1. Verify Minnesota Contractor Licensing Minnesota requires HVAC contractors to hold a state license. Verify any contractor you're considering at the Minnesota Department of Labor and Industry (DLI) license lookup tool at... Read more...
Furnace Ignitor Types: Hot Surface vs. Spark — What's the Difference?
Furnace Ignitor Types: Hot Surface vs. Spark — What's the Difference? If your furnace tries to start but the burners never light, the ignitor is one of the first things to investigate. Modern furnaces use two types of ignition systems — hot surface ignitors and direct spark ignitors — and understanding how each works helps you diagnose problems and avoid unnecessary service calls. The End of Pilot Lights Standing pilot lights — the small continuously burning flame that lit furnaces throughout the 1970s–1990s — have been largely replaced by electronic... Read more...
Furnace Pressure Switch: How It Works, Why It Fails, How to Test It
Furnace Pressure Switch: How It Works, Why It Fails, How to Test It If your furnace is short-cycling — starting up, running briefly, then shutting off — a failed pressure switch is one of the most common culprits. It's also one of the most frequently misdiagnosed. Here's a clear explanation of what the pressure switch does, why it fails, and how to test it before you spend money on an unnecessary part. What Is the Furnace Pressure Switch? The pressure switch is a safety device that verifies the inducer motor... Read more...
Heat Pump vs. Furnace in Minnesota: Which Is Right for Your Climate?
Heat Pump vs. Furnace in Minnesota: Which Is Right for Your Climate? Heat pumps have gotten a lot of attention recently — efficiency incentives, electrification mandates, and improved cold-weather performance have all pushed them into conversations that used to be furnace-only. But Minnesota's climate is uniquely challenging. Here's a grounded, honest comparison for our market. How Each System Works Gas Furnace A gas furnace burns natural gas or propane to generate heat. It's simple, reliable, and produces very high supply air temperatures (120–140°F typical). In -20°F conditions, a properly sized... Read more...
Furnace Flue Pipe: Types, Sizing, and Installation Requirements
Furnace Flue Pipe: Types, Sizing, and Installation Requirements Every gas furnace produces combustion exhaust that must be safely vented to the outdoors. The type of flue pipe required depends on your furnace's efficiency rating — and this is one area where getting it wrong creates serious safety problems. Here's what Minnesota homeowners and contractors need to know about furnace flue pipe. The Two Main Furnace Venting Categories Category I: Non-Positive Pressure (80% AFUE Furnaces) Standard 80% AFUE furnaces produce hot exhaust gases (typically 300–500°F) that rise naturally through a metal... Read more...