How to Troubleshoot Strange Noises Coming From Your HVAC System

March 10, 2026

Modern residential HVAC systems are impressively silent. You may notice a whoosh or a click when a system cycles on, but that should be about it. Louder and persistent noises are often the telltale signs of an underlying malfunction. Even minor issues can lead to higher energy bills and bigger repair costs down the line. Let’s explore some of the most common HVAC noises, what may be causing them, and what you should do about them. Whistling An airflow-related whistling sound is usually due to the HVAC filter or a supply register. It may mean that the air is moving around the filter rather than through it. This can happen because you’re using a clogged filter. The average household has to replace its HVAC filter every one to three months. Otherwise, it will eventually become saturated. Whistling can occur when the filter dimensions are too small for your return register. Another potential issue is the minimum efficiency reporting value (MERV). The industry uses this rating to evaluate HVAC filters. The higher the MERV rating, the better the filtration, but also the higher the airflow restriction. If the MERV rating is higher than what your system supports, it’s effectively the same...

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Paws and Airflow: Essential HVAC Maintenance Tips for Pet Owners

March 3, 2026

All pet owners want to do right by their pets, and a big part of this is making sure they’re comfortable at home. Maintaining your HVAC system and improving your indoor air quality can allow you to do that. Many irritants that bother humans can also affect pets. There are several easy HVAC maintenance tips that can help you create a safer, cleaner, and more comfortable environment for all of you. Change or Clean Your Air Filter Cleaning or changing your air filter is important for both your indoor air quality and your HVAC system. When the filter gets clogged, your unit doesn’t work efficiently. This could strain it, increasing the risk of problems and decreasing its lifespan. Additionally, a clogged air filter traps fewer contaminants, allowing them to recirculate into the air, where you and your pets breathe them in. Some units have a reusable filter while others have a disposable one. Before cleaning or replacing the filter, start by turning off the system. If your system has a reusable filter, remove it, wash it carefully, let it dry completely, and put it back in. It’s best to do this at least every few weeks. For disposable filters, take...

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