Residential Plumbing A-Z

A.B. Chelini’s highly trained plumbers can handle any residential repair or replacement of water heaters (gas or electric), garbage disposals, sump pumps, faucets, sinks, toilets, tub, showers and more! We can also help you update your kitchen and bathroom fixtures with the latest in faucets, water saving toilets and shower heads. Our expert sewer cleaning can prevent backups that can damage your home and we can install back-up systems for your sump pump that prevent flooding when bad storms knock out your electricity.

No matter what type of plumbing issue you may have in your home, you can rely on our experts for all your plumbing needs. As homeowners we understand how difficult and trying a plumbing issue can be. That is why we ensure that our customers are always happy and satisfied when they call our experts for plumbing services. We will be on time, courteous, and provide you with an estimate for services before we begin working. Call us today and see the A.B. Chelini difference — we are here to help you keep dry and your home undamaged!

Service & Repairs


Need a solution to your plumbing problem? 

You can count on us! Whether you’re looking for routine maintenance or you need a plumbing solution for a major repair, we’ll be there.

Why Are My Pipes rattling?

The most common reason for rattling pipes is that the washer in the faucet or valve is loose. Another is that the pipe is touching another pipe or hard surface in the wall.

My water bill seems high and none of my faucets seem to be leaking, is there anything else that could be causing the sudden increase?

The first thing you should check is your toilets, make sure they are not leaking. Then you can check to make sure your fill valve, inside the tank, is not overflowing through the overflow pipe. There is a small tube that should be connected to it, you want to make sure the water level is about 1 inch below the overflow tube or level with the manufacturers mark inside the tank. The last thing you can check is your flapper. You can do this by adding a couple of drops of some food coloring to your tank water, let it sit for about 15-20 minutes and check to see if the water in you bowl has changed color. If it has, then you will need to replace your flapper.

Sump Pumps


A.B. Chelini offers many different sump pump services ranging from installations and repairs, to consultations and removals. A sump pump is an integral part of a basement waterproofing. These pumps remove the water from your sump pit (hole that is designed to collect water and other spilled fluids); once the liquid is gone, it can’t contribute to cracking, bowing, or other structural deterioration.

The professionals at A.B. Chelini work with clients in the Washington Metropolitan area to ensure that their foundations are strong and dry. Don’t let a little bit of standing water ruin the investment you have made in your home. Get your free estimate today!

What Is The Most Common Cause Of a Sump Pump Failure?

The most common cause of sump pump failure is electrical in nature. Plugging the pump into an extension cord, or an outlet that shares a circuit breaker with other electrical items, can cause the pump to receive low voltage. Heat is the enemy of electric motors and can shorten the life of a pump dramatically. We recommend the pump be plugged directly into an outlet (no extension cords) and that the outlet be the only thing powered by the circuit breaker (or fuse) that feeds it.

How do I check my pump to see if it’s working?

If your pump is equipped with a piggyback-style plug (where the pump plugs into the back or side of the switch plug) then you can unplug the pump’s plug and put it directly into the power outlet. The pump should immediately run. It will continue to run as long as you leave it plugged in this way. Do not leave it plugged in for more than a few minutes so that the pump does not overheat. To test to make sure the float switch is also working, or if your sump pump has a switch that plugs directly into the body of the pump, you will need to lift the float switch to its ‘on’ position. This will vary depending upon pump model so consult your owners’ manual for that information.

Drain Cleaning


Replacement of gas, electric, and tankless water heaters to code. Repair and replacement of TP valves, earthquake straps, flex connectors, pans, extra pipes, circulation pumps and vent lines.

How do I know what size sump pump I need?

What you need to consider is horsepower, not size. The horsepower requirement for a house is determined by the area of drainage connected to the sump, the depth to the groundwater, the depth of the basement and a few other factors. A 1/3-hp pump is standard for most houses.

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Water Heaters


We know there’s nothing worse than finding out a few hours too late that you’re without hot water. That’s why our plumbers are dedicated to providing you with responsive and timely service to ensure that your hot water heater installation is completed quickly.

Maintaining hot water production is crucial to your home needs including cooking, cleaning, bathing, and space heating. Most water heaters are tank water heaters which keep a cylindrical tank full of hot water in your home at all times. If a replacement water heater is necessary, A.B. Chelini will help you determine which one is right for your home and budget, taking into consideration your family’s water heating needs and energy usage expectations. Don’t wait and risk serious damage from a flooded basement. Save yourself the hassle of a water heater breakdown by calling A.B. Chelini to replace your older unit with a new energy-efficient water heater.

When Should I replace my water heater?

Most hot water heaters will last around eight to 12 years. Once they’ve been around for this long, they start to lose their efficiency and become more prone to failure. Most people wait until their water heater has catastrophically failed before shopping around for a replacement water heater, but there are benefits to upgrading your unit before it dies!

What factors should I consider when choosing a new water heater?

Consider fuel source (gas or electric), storage capacity (30 gallon to 80 gallon available), tank type (tank or tankless), and warranty.

How do I know if I need a new water heater?

There are several signs that may indicate your water heater might be failing:

  • Water buildup in or around the area of your water heater may suggest a leak.
  • Water-quality issues, such as rust or sediment visible in your water supply, could indicate the unit may fail soon.
  • The unit no longer provides the same temperature or duration of hot water as it had in the past.



At A.B. Chelini, we’re dedicated to creating long-term relationships with our clients by providing top quality boiler service. Specializing in boiler system maintenance, repair, and installation, we have the training and expertise to provide you with first-rate, cost-effective work. We know how much you rely on your boiler; we pledge to respond to your calls quickly and perform our service efficiently.

As boilers age, they can lose efficiency or stop working all together. That’s why it’s a good idea to have yours inspected every year. As a boiler service provider in the Washington metropolitan area, we’re on hand to pinpoint any lurking issues with your boiler so that you don’t find yourself in a bind come winter.

So whether your boiler service needs are big or small, you can count on A.B. Chelini for excellence. For more information or to get an estimate, contact us today.

What are the benefits of a boiler?

Boilers distribute heat evenly throughout living spaces which helps to eliminate drafts. Boilers are also quiet, environmentally safe, and easily customizable.

Can I get a high efficiency boiler?

Yes, boilers can reach up to 98% efficiency.

Carbon Monoxide Detectors


Carbon monoxide (CO) is a deadly, colorless, odorless, poisonous gas. It is produced by the incomplete burning of various fuels, including coal, wood, charcoal, oil, kerosene, propane, and natural gas. On average, about 1500 people in the United States die every year due to accidental carbon dioxide poisoning produced by non-automotive consumer products. These products include malfunctioning fuel-burning appliances such as furnaces, ranges, water heaters and room heaters, engine-powered equipment such as portable generators, fireplaces, and charcoal that is burned in homes.

With today’s tightly sealed and well insulated homes, carbon monoxide can accumulate to hazardous levels in a short period of time. Therefore, it’s critical to have working carbon monoxide detectors in your home. Other fuel burning appliances such as gas water heaters, dryers and other appliances should also be checked to ensure they are properly vented to the outside of the house. A.B. Chelini’s skilled and knowledgeable technicians can easily install carbon monoxide detectors, investigate for sources of CO from fuel burning equipment and appliances, and inspect for proper operation of this equipment.

Call us today to keep your family safe!

What are the symptoms of CO poisoning?

The most common symptoms of CO poisoning are headache, dizziness, weakness, upset stomach, vomiting, chest pain, and confusion. CO symptoms are often described as “flu-like.” If you breathe in a lot of CO it can make you pass out or kill you. People who are sleeping can die from CO poisoning before they have symptoms.

What CO level is dangerous to my health?

The health effects of CO depend on the CO concentration and length of exposure, as well as each individual’s health condition. CO concentration is measured in parts per million (ppm). Most people will not experience any symptoms from prolonged exposure to CO levels of approximately 1 to 70 ppm but some heart patients might experience an increase in chest pain. As CO levels increase and remain above 70 ppm, symptoms become more noticeable and can include headache, fatigue and nausea. At sustained CO concentrations above 150 to 200 ppm, disorientation, unconsciousness, and death are possible.