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Category: HVAC

Technician removing an air filter from a home furnace to check furnace filter sizes and proper fit.
Furnace

Furnace Filter Sizes: How to Choose the Right One

Most homeowners try to choose the right furnace filter, yet the process often feels confusing. At Pointer Cooling and Heating, we hear this every season. People want healthier air, fewer allergy triggers, and better airflow, but they aren’t always sure where to begin. Because the market offers so many furnace filter sizes, it helps to understand what each option means before you buy. When you know how sizing works, you

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November 29, 2025 No Comments
Technician showing how to change furnace filter for better airflow and indoor air quality
Furnace

How Often to Change Furnace Filter for Best Air Quality

When homeowners ask how often to change a furnace filter, I have a good idea of what’s going on in their home. Airflow feels weaker. Dust shows up faster. Sometimes the house just feels a little stale. I’ve seen this pattern many times during service calls for Pointer Cooling & Heating, and the truth is simple: your furnace filter does more for your home than most people realize. It protects

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November 28, 2025 No Comments
Whole-house humidifier installed on HVAC ductwork, used to explain how humidifiers cause mold when moisture isn’t controlled properly
HVAC

Do Humidifiers Cause Mold? What to Know

When homeowners ask “do humidifiers cause mold?”, they’ve noticed moisture on windows, a musty odor, or a patch of discoloration they swear wasn’t there last week. I’ve seen this situation many times during service calls. Humidifiers make dry air more comfortable, but when the moisture isn’t controlled, problems start. At Pointer Cooling and Heating, we explain this a lot because the answer isn’t a simple yes or no. It depends

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November 22, 2025 No Comments
Carbon monoxide detector on a ceiling inside a home, used to detect CO levels when a carbon monoxide detector is beeping
HVAC

Carbon Monoxide Detector Beeping? Here’s What It Means

When you hear your carbon monoxide detector beeping, your stomach usually drops for a second. I get it. I’ve been inside plenty of homes where that alarm sends everyone into a panic. And honestly? It should get your attention. At Pointer Cooling and Heating, we’ve seen how fast carbon monoxide (CO) issues can escalate. The important thing is knowing what the beeping means, what you should check first, and when

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November 20, 2025 No Comments
Family relaxing in a bright living room with clean indoor air from whole-home air purifier and humidifier systems
HVAC

Air Purifier vs Humidifier: Which One Does Your Home Need?

If you’ve ever dealt with dry air or constant sneezing, you’ve probably asked yourself this question: Which one helps more—an air purifier or a humidifier? At Pointer Cooling and Heating, we hear it all the time. And honestly, it’s a good question. The truth is, both devices improve indoor comfort, but they do it in totally different ways. Let’s clear the air (literally) and break down the air purifier vs

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November 8, 2025 No Comments
Close-up of UV-C light used in HVAC system to kill mold and improve indoor air quality.
HVAC

Does UV Light Kill Mold? What the Science Says

If you’ve ever dealt with that stubborn musty smell coming from your HVAC system or noticed mold near your vents, you’ve probably wondered — does UV light kill mold? As someone who’s worked with countless heating and cooling systems here at Pointer Cooling & Heating, I can tell you this question comes up all the time. The short answer? Yes, UV light can kill mold — but how well it

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November 6, 2025 No Comments
Clean and dirty HVAC air filters showing how buildup affects airflow, efficiency, and overall air filter MERV rating performance.
HVAC

Air Filter MERV Rating Explained: What It Means for You

If you’ve ever shopped for an air filter and felt lost staring at all those numbers and ratings, you’re not alone. Most homeowners just want cleaner air and a system that runs efficiently—but that’s where understanding your air filter MERV rating makes all the difference. At Pointer Cooling and Heating, we’ve spent years helping people figure out which filters actually make sense for their home instead of just buying whatever

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November 1, 2025 No Comments
Pointer - What Is CFM? Why Airflow Matters in Your HVAC System
Air Conditioning Tips

What Is CFM? Why Airflow Matters in Your HVAC System

If you’ve ever wondered, “what is CFM?” you’re in good company. At Pointer Cooling and Heating, we get that question more often than you might think — usually from homeowners who want to understand how their HVAC system really works. In the simplest terms, CFM means cubic feet per minute, a measure of how much air your system moves. It sounds technical, but once you understand it, you’ll see how

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October 17, 2025 No Comments
Pointer Cooling and Heating - What Is Forced Air Heating
Furnace

What Is Forced Air Heating and How Does It Work?

If you’ve ever asked yourself what is forced air heating and why it’s so common, you’re not alone. Here at Pointer Cooling and Heating, we hear that question all the time—and honestly, it makes sense. It’s one of the most reliable and efficient ways to heat a home, yet also one of the most misunderstood. Homeowners hear terms like “forced air,” “central heat,” and “HVAC” and wonder what’s actually happening

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October 13, 2025 No Comments
plenum hvac
HVAC

Plenum HVAC: What It Is and Why It Matters for Comfort

If you’ve ever looked inside your heating and cooling system and wondered about the large box connected to the ducts, you’ve seen the plenum. In HVAC terms, the plenum is one of the most important components of your system. Yet many homeowners in Moncks Corner, SC, don’t know what it does or why it matters. At Pointer Cooling & Heating, we believe understanding plenum HVAC design helps you make better

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October 4, 2025 No Comments
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