Virginia & Maryland Heating, Air Conditioning & Plumbing
    • Preparing Your AC for Fall

      Our Top Tips for Homeowners As summer ends, it's time to start thinking about autumn. While the cooler weather will eventually mean that we start using our heaters instead of our air conditioners , ...

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    • Adding Air Conditioning to Garages

      Is It Finally Time to Cool Off? Most garages are not connected to a home's central air conditioning. This is because garages are primarily used for storage and parking cars. Neither of these uses ...

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    • Air Quality FAQs: Should I Sign Up for an Air Filter Subscription?

      Are you concerned about the air quality in your home? Many homeowners have become more aware that indoor air quality tends to suffer in the summer and that indoor air quality is often much worse than ...

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    • How to Protect Your Indoor Air Quality This Winter

      Does Air Quality Get Worse in the Winter? Several factors can cause indoor air quality to worsen in the winter. A primary reason is that we tend to keep our homes shut up and closed to keep the warm ...

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    • Air Quality FAQs: Should I Sign Up for an Air Filter Subscription?

      Are you concerned about the air quality in your home? Many homeowners have become more aware that indoor air quality tends to suffer in the summer and that indoor air quality is often much worse than ...

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    • Are Dehumidifiers Worth the Investment?

      Summers in Virginia and Maryland get extremely humid. Humidity is a major contributing factor to discomfort in our homes. In fact, increasing humidity in your home is a common tip for making your home ...

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  • DIY
    • Fall Plumbing Maintenance

      Preparing Your Pipes for the Colder Months The fall months are a great time to make sure your home is prepared for the winter. That means making sure your heater is ready to go, bringing out the ...

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    • Is Your Thermostat Accurate?

      Make Sure Your HVAC System Knows What’s Going on in Your Home Your thermostat is the control center for your entire heating and cooling system. If it’s not able to accurately read the temperature ...

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    • 7 Ways to Warm Up Your Home This Winter

      With snow and rain constantly in the forecast this time of year, your home should be the ultimate respite. We’re sharing some tips and tricks you can use that will keep you warm all winter long. Keep ...

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    • How Your HVAC System Can Contribute to Fall Allergies

      With fall fully underway, you have probably already adjusted your HVAC usage to fit with the season. However, as the weather gets colder and you use your AC unit less and your furnace or other heating ...

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    • Four Common Problems With Your Ductwork

      Picture this: it’s a blistering summer day, you fire up your air conditioner to get rid of the stuffiness in your home, and you hear your system set to work. However, a couple of hours pass and your ...

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    • Does Your Heater Need Maintenance?

      Signs You Need to Schedule Routine Heater Service In addition to broken parts, heaters can also suffer from worn-out parts, clogged air filters, and more. Mid-winter, a few months after your annual ...

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    • Should You Call for Emergency Heater Repair?

      What Is a Heating Emergency? Generally speaking, it is considered a heating repair emergency whenever you are without heat in the winter. It gets cold here in Virginia and Maryland, and as such, if ...

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    • Test Your Heating System Now

      Make Sure Your Heater Works Before Winter Strikes We love fall on the east coast. The weather cools off, the leaves change color, and all in all, it’s a gorgeous season. As we move away from using our ...

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    • Should You Call for Emergency Heater Repair?

      What Is a Heating Emergency? Generally speaking, it is considered a heating repair emergency whenever you are without heat in the winter. It gets cold here in Virginia and Maryland, and as such, if ...

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    • Should You Consider a Heat Pump?

      3 Reasons to Think About Installing a Heat Pump In recent years, heat pumps have been gaining popularity over traditional furnaces and boilers, even in colder climates. But, should you consider a heat ...

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    • How Do I Prepare My HVAC System for Spring?

      How Do I Prepare My HVAC System for Spring? Four Tips to Help You Get Your AC Ready for Spring This year, the spring equinox falls on March 20, marking the first day of spring. As we all look forward ...

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    • How to Get Your Plumbing System Ready for Fall

      Fall is officially here, and while that may signal different things to many people (Halloween is just around the corner, football season is in full swing, it’s time to drink copious amounts of pumpkin ...

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    • Donmar Heating, Cooling & Plumbing Receives Carrier’s 2019 President’s Award!

      At Donmar Heating, Cooling & Plumbing, we’ve always sought to be the company who exemplifies the best in workmanship, friendliness, and customer service. For more than 30 years, we’ve developed a ...

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    • Donmar Company Heating & Cooling Selected for 2017 President's Award

      Donmar Company Heating & Cooling is proud to share our latest accomplishment. Carrier, one of the leading and most widely known brands of home services appliances—from heaters, air conditioners, and ...

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    • Beware Frozen Plumbing When the Temperature Drops

      Why Do Pipes Freeze? You may wonder why you should be concerned with frozen plumbing when you keep your house warm all winter. While your home’s ambient temperature will help keep your interior ...

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    • Quick Plumbing Facts: Water Heaters & Hard Water

      What Is Hard Water? Hard water refers to water with a high mineral content in it. The most common minerals found in hard water are calcium and magnesium. Hard water is not unsafe, and many ...

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    • 3 Important FAQs About Sump Pumps

      3 Important FAQs About Sump Pumps Do You Really Need a Sump Pump? Perhaps the most frequently asked question about sump pumps is whether or not a customer actually needs one. Sump pumps are incredibly ...

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    • Do You Need a New Thermostat?

      Signs You Should Replace Your Thermostat We usually know when our heating system is having trouble, but how do you know when the real issue is your thermostat? As an appliance, the thermostat is ...

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    • Tips for Getting the Most Out of Your Smart Thermostat

      More and more people are installing smart thermostats in their homes. In addition to making your life easier, smart thermostats offer consumers flexible solutions for their heating and cooling needs ...

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    • How to Program Your Smart Thermostat for Maximum Energy-Efficiency

      Make the Most of Your Smart Technology As technology advances, more and more households are incorporating “smart” technology into their homes. One of the most popular and accessible smart devices is ...

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    • How to Protect Your Indoor Air Quality This Winter

      Does Air Quality Get Worse in the Winter? Several factors can cause indoor air quality to worsen in the winter. A primary reason is that we tend to keep our homes shut up and closed to keep the warm ...

      Read More
    • Test Your Heating System Now

      Make Sure Your Heater Works Before Winter Strikes We love fall on the east coast. The weather cools off, the leaves change color, and all in all, it’s a gorgeous season. As we move away from using our ...

      Read More
    • Preparing Your AC for Fall

      Our Top Tips for Homeowners As summer ends, it's time to start thinking about autumn. While the cooler weather will eventually mean that we start using our heaters instead of our air conditioners , ...

      Read More
    • Reasons to Consider Upgrading Your Water Heater

      Signs It’s Time to Replace Your Water Heater The average water heater lasts for around a decade. Some will last more than ten years if properly maintained, but if you are approaching a decade, it is ...

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    • Quick Plumbing Facts: Water Heaters & Hard Water

      What Is Hard Water? Hard water refers to water with a high mineral content in it. The most common minerals found in hard water are calcium and magnesium. Hard water is not unsafe, and many ...

      Read More
    • 5 FAQs About Water Heaters

      Got a Question? Let Us Know! At Donmar Heating, Cooling & Plumbing, our plumbers live and breathe water heaters . With so much experience, there’s not much we don’t know about them. However, we also ...

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