How to Install a Mini Split Like a Pro (Avoid Costly Mistakes) | DIY Installation Guide, Tools, Wiring & Setup Tips

Professional installing a wall-mounted mini split with wiring, refrigerant lines, vacuum pump, gauges, and essential DIY tools for a complete setup guide.

You can install a mini split yourself, but the refrigerant step carries federal rules most DIY guides skip. That is the part worth knowing before you open the box. We sell air filters, not mini splits, so we have no stake in which system you buy. We also see a part of this story installers … Read more

How Often to Change MERV 13 Filter for Virus Protection: Replacement Frequency, Lifespan, and Signs MERV 13 Filter Needs Changing in Homes with Pets, Allergies, or Wildfire Smoke

An image of a masked HVAC technician replacing a MERV 13 air filter.

Sixty days is the average gap we see between a MERV 13 filter leaving our warehouse and the same household ordering its replacement. Some homes stretch that to ninety. Others come back at thirty, asking if something’s wrong. Nothing’s wrong. The filter ran out of capacity earlier than the calendar said it should, because pets, … Read more

Finding the Best Deals on 20x25x5 MERV 13 Air Filters for Day and Night HVAC

A clean 20x25x5 MERV 13 pleated air filter displaying multipack savings and compatibility icons, representing a guide to finding the best deals on 20x25x5 MERV 13 air filters for Day and Night HVAC systems.

Finding a 20x25x5 MERV 13 air filter for a Day and Night HVAC system shouldn’t be this hard—but here’s what most guides won’t tell you: this size is uncommon enough that most big-box retailers simply don’t stock it, and the customers who try to make a “close enough” substitute work almost always regret it. We’ve … Read more

Are Filter Subscriptions Worth It for 20x25x5 MERV 8 Air Filters?

An infographic answering the question 'Are Filter Subscriptions Worth It for 20x25x5 MERV 8 Air Filters?' It contrasts a 'No Subscription' scenario featuring a dirty air filter, a broken HVAC unit, and high energy bills, against a 'With Subscription' scenario showing automatic delivery, a happy family enjoying consistent clean air, and a piggy bank representing cost savings.

Most 20x25x5 buyers find FilterFlowAC the same way: after every big-box store and hardware aisle has come up empty. A familiar story. The size just isn’t common on shelves anywhere, which is the whole reason the subscription question matters differently here than for a standard 20x25x1. For a 1 inch filter, your fallback is a … Read more

How Does a Heat Pump Heater System Work: The Complete Explanation

An informative infographic from FilterFlowAC, titled "How Does a Heat Pump Heater System Work: The Complete Explanation," displaying a cross-section of a home split between "Heating Mode" and "Cooling Mode." It illustrates the flow of air and refrigerant using colored arrows and labeled components, such as compressors and expansion valves, to explain the heat transfer process. The diagram specifically highlights the movement of filtered air and includes a brand color palette reference.

Every week, we talk to homeowners who have just made the switch from a furnace and want to understand what they’re actually running. The question is almost always the same: how does a system that runs on electricity heat a house more efficiently than one that burns gas? A heat pump moves heat rather than … Read more

Best 21.5x24x1 MERV 11 Air Filters for Pets and Allergies

An illustrated infographic showcasing the Best 21.5x24x1 MERV 11 Air Filters for Pets and Allergies. The graphic features a fan of pleated air filters actively capturing airborne particles like dust mites, pollen, and hair, alongside icons highlighting benefits such as "Traps Pet Dander," "Allergy Relief," and "High-Efficiency Filtration" in a clean blue and white color palette.

We know what’s sitting in your HVAC cabinet right now. It’s probably a worn-out filter running past its replacement date, or a close-but-different size wedged in to fill the gap, because the actual 21.5x24x1 hasn’t appeared on a store shelf within driving distance. That’s the situation customers describe to us constantly, nearly word for word. … Read more

Colorado Springs Colorado Live Air Quality Index AQI Map Now & Today

A digital dashboard displaying the Colorado Springs Colorado Live Air Quality Index AQI Map Now & Today, featuring a color-coded map with local landmarks, current readings, an AQI legend, and a daily forecast chart.

One week of wildfire smoke from a Colorado Rockies fire corridor can load a MERV 8 filter as much as three months of normal use. We know this because Colorado Springs customers tell us every week. The live air quality index in Colorado Springs can climb from green to red before noon during fire season, … Read more

How Much Should I Budget for Central AC Replacement in an Older Home?

Photo-realistic outdoor scene of central AC replacement at an older home, featuring a new air conditioning unit, HVAC technicians inspecting equipment near the house, and tools, paperwork, and cash in the foreground representing installation and budgeting costs.

That first contractor quote usually looks manageable. Then they walk the crawlspace. Budget $5,000 to $12,000 for central AC replacement in an older home. If your system predates 1985, plan for the higher end before you sit down with anyone holding a clipboard. We hear from customers every week who got a clean $4,000 estimate … Read more

How to Choose the Best Furnace Filter for Winter Allergens Without Straining Your Blower

A three-step infographic illustrates how to choose a winter furnace filter by understanding MERV ratings, measuring dimensions accurately, and balancing airflow to prevent blower strain.

“Picture this: It’s February, your heat is running full blast, and your neighbor calls you because her furnace just died. The culprit? She’d swapped in the highest-MERV filter she could find, thinking more filtration meant better air. Instead, she choked her blower motor and burned it out — mid-snowstorm. At FilterFlowAC, we hear that story … Read more