D&F Plumbing, Heating and Cooling is proud to service a wide area of customers throughout the Portland Metro Area. Whether your plumbing emergency happens in the middle of the night, on a weekend, or a holiday, you can count on D&F to help you when a disaster strikes.

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Your sprinklers directly draw water from your main water line before distributing it through various valves and out to different areas of your property to keep your lawn and garden watered. However, the lines that carry this water are vulnerable to intrusion from bugs, bacteria, and other harmful organisms. They are more likely to be damaged over time due to exposure to the elements or accidental impact. And the water inside these lines can cause mold and mildew growth. Additionally, homes that use reclaimed water from a septic system will mix this reclaimed water into the irrigation lines, making water highly unsuitable for general use.

Whether you’re experiencing clogged drains or an air conditioner blowing hot air, you need a team you can count on to get you back up and running as soon as possible. D&F Plumbing, Heating and Cooling has been serving the Portland and Vancouver area since 1927. Man, we look good for our age! Why plaid, you ask? Because no one would take us seriously if we wore polka dots!

Heater on the fritz? From routine maintenance to heating system repair and replacement, D&F will treat you like our top priority – because you are.

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Whether it’s heating, air conditioning, or indoor air quality solutions you need, make D&F your first call for HVAC services. We’re not just about fixing your heating and cooling issues, but also about making sure you feel taken care of. We’re old-fashioned in our approach — rolling out the red carpet for you every time.

Therefore, because these lines are directly connected to your main water supply, this water absolutely cannot flow backward under any circumstances. Therefore, any home with an irrigation system needs to have a backflow prevention system.

Air pollution is everywhere – even in your home. Learn more about how you can enjoy clean, fresh air with a state-of-the-art indoor air quality system from D&F.

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Yes! Visit our Careers page to learn how you can join our team of expert local plumbers and HVAC technicians. We look forward to hearing from you!

Whether you own a home or run a business, you shouldn’t have to worry about your plumbing, heating or cooling. For 97 years, you’ve trusted D&F because you know we have what it takes to diagnose and repair any problems you’re dealing with–large or small. When you’re looking for affordable, professional plumbing and HVAC services done right, you can count on our team. At D&F Plumbing, Heating and Cooling, we always leave the seat down!

Yes. Installing a garbage disposal is an effective way to avoid one of the most common types of household drain clogs. We can send out a D&F technician with experience handling the necessary electrical wiring and plumbing equipment to properly install your new garbage disposal.

However, you might find that your home does have one of these backflow preventers installed. Why do you need to have this and what purpose does it serve? You’ll find the answer to these questions here.

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Yes. Whether you feel that you’ve been missing out on having a dishwasher or your current one needs replacing, we are here to help. We can install and replace built-in dishwashers, dish-drawer dishwashers, compact dishwashers, and freestanding dishwashers. A properly-installed dishwasher can save you time washing dishes and save you money by avoiding leaks and malfunctions.

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What are the four types ofbackflow preventers

A backflow prevention device works as a sort of one-way water valve that constantly monitors the flow of water to ensure it is only moving in one direction. When water begins to flow back the other way due to a pressure difference, the valve immediately cuts off the flow and prevents the water in the system from going any further. There are different types of backflow valves that do this in differing ways, but for the most part, the type of valve you will find in homes is known as a “pressure vacuum breaker.”

In order to work, a vacuum breaker valve needs to be installed at a high point on a plumbing line, and this is why you will typically find these valves installed somewhere near where your irrigation line meets your main water line (probably on the side of your home). They also need to have clean, uninhibited access to atmospheric air to reduce vacuum conditions found in piping systems.

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Backflow prevention systems are generally extremely reliable and require little to no maintenance. However, over time, they will slowly start to fall apart and lose their effectiveness as materials age. Likewise, freezing weather can damage backflow preventers, particularly there is any water in the mechanism when the freeze happens and the mechanism itself is not insulated.

A typical home doesn’t need a backflow prevention system purely because homes are naturally protected from backflow anyway. When water leaves a tap or faucet, it typically flows downward to a drain. The two are not connected, and therefore water can’t flow from the drain back up into the faucet, causing the potential for contamination. However, this is not the case for one particular plumbing mechanism that your property might have: an automatic irrigation system.

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Backflow is a dangerous phenomenon that occurs when the pressure inside a property’s water system exceeds the pressure coming from the supply line, forcing the water backwards into the supply. This can potentially contaminate water throughout the entire system, creating a dangerous situation for everyone around the initial backflow event. For this reason, every commercial and industrial building is required to have a backflow prevention system, as well as multi-family residential buildings as well. However, single-family homes are typically exempt from this requirement.

Yes. A badly blocked drain can quickly lead to serious issues if it isn’t addressed right away. We have emergency plumbers to address any of our customers’ urgent plumbing issues, including emergency clogged drains.

Since 1927, Portland and Vancouver have counted on our experience and professionalism for plumbing and HVAC installations, repairs, repipes, upgrades, and more. What’s our secret to making it so long? We value your satisfaction and do everything we can to make sure you have a good experience when you work with us. So if you’re looking for a plumbing, heating, and cooling company that’s fully licensed, bonded, and insured, trust D&F. Prompt, courteous service and unsurpassed workmanship is our starting point, and we always go above and beyond!

Whether you’ve got central AC or a window unit, air conditioning is practically a necessity in Portland these days. Will your system be ready to work when you need it?

When water flows backward, it creates a vacuum condition that will essentially suck water back through your irrigation lines and into your main water line. However, if your irrigation lines are all closed off (which they should be when you aren’t watering anything), then the vacuum force could tear your irrigation system apart. A vacuum breaker prevents this by opening a valve that relieves the vacuum pressure. Likewise, the valve’s location at the high-point of that particular branch of your plumbing system means gravity naturally prevents the water from continuing to be pulled backward.