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Upgrading to a tankless water heater saves money and ensures you never run out of hot water. Herndon McFarland Plumbing has provided tankless water heater installations in Farmers Branch since 1995. We size each system based on how your household uses hot water rather than a spec sheet.
Book your tankless consultation online with Herndon McFarland Plumbing.
Herndon McFarland Plumbing handles every part of a tankless project, from load calculations to final inspection. These are the tankless water heater installation options we offer across DFW.
Gas units deliver the high BTU output most Farmers Branch families need for two showers and an appliance at once. We confirm that your line and meter can feed the unit, then install a condensing or non-condensing model.
Electric models suit smaller homes, additions, and point-of-use spots like a guest bath. As they draw high amperage, we verify panel and circuit capacity first so the install passes inspection.
This is where most installs go wrong. We calculate your peak flow rate and match it to the temperature rise your home needs in winter, not a mild spec sheet day.
Moving from tank to tankless usually means resizing the gas line, adding venting, and relocating connections. If a like-for-like swap fits your budget, we also handle tank water heater repair and replacement.
Farmers Branch has hard water. It causes scale inside the heat exchanger, reducing flow and efficiency. We descale yearly to protect your warranty and output.
Installing a tankless water heater in Farmers Branch requires a permit, a gas pressure test, and a city inspection. We pull the permit, size the line, and schedule the inspection to keep the job code-compliant.
A tankless unit does not have a single fixed gallons-per-minute rating. The U.S. Department of Energy notes that demand-type water heaters are rated by the temperature rise they produce at a given flow rate. Cooler inlet water reduces the temperature delivered at the tap. The temperature rise is your target: around 120 degrees, minus the water arriving at the house.
Farmers Branch buys its water from the City of Dallas, which draws from surface reservoirs and the Elm Fork of the Trinity River rather than deep wells. Surface water follows the seasons. In late summer, the supply arrives warm, so the unit adds only a modest rise and reaches rated flow. In January, the same supply arrives far colder, and the required rise climbs sharply.
That wider winter rise quietly cuts real output. A unit that ran two showers in August can turn lukewarm in January because the same burner heats colder water over a larger temperature difference. Homeowners read it as a system that “cannot keep up,” when it was simply sized for the easy season.
We size for the coldest month, not the label. We measure your peak flow, set the required rise against winter inlet water, and pick a gas or electric unit, or a matched pair, that meets the output in February. That is the difference between a tankless install that frustrates and one that performs all year.
Teri Arteaga was managing her parents’ home from Los Angeles when their water heater quit on a Sunday, with her father living with advanced Alzheimer’s and her mother as his caregiver. The original installer had gone silent, leaving the family stranded with a warranty claim until our team stepped in to coordinate the remote replacement.
“I want to express my deepest gratitude to Herndon McFarland and their team for their outstanding support in replacing my parents’ water heater. My father has advanced Alzheimer’s, and my mom is his primary caregiver, so managing everything remotely from LA has been incredibly difficult, especially when the water heater went out unexpectedly on a Sunday morning… What really stood out to me was their empathy and transparency throughout the entire process… I couldn’t have done this without their help, and I am incredibly grateful for their professionalism and kindness.”
Teri’s experience reflects how we handle high-pressure replacements. We work on the warranty, document the inspection, and keep the homeowner informed throughout the process. The same coordination carries into a tankless install on a tight timeline. Read Teri’s full Google review.
C. Augusto Dias called us after an old upstairs supply line burst, damaging the family room ceiling below. He also chose to retire two aging gas water heaters, including one wedged into a difficult spot in the attic.
“After our family room ceiling was damaged by an old water supply line that burst from an upstairs bathroom, we contracted HMP. We also decided to replace two 22 year old water gas heaters. HMP plumbing did a great job replacing the supply lines and both water heaters including one that was in a tough spot in the attic. They were professional, hard-working and courteous. We are very satisfied with their work and highly recommend them.”
Tight placements like attic units are routine for our installers. This matters in tankless projects where venting and gas routing get cramped. We treat access as part of the job, never an excuse for a rough install. Read Augusto’s full Google review.
Herndon McFarland Plumbing has served Farmers Branch and DFW since 1995, with more than 100 years of combined plumbing experience. We operate under TX Responsible Master Plumber license RMP35786.
Ready to stop running out of hot water? Herndon McFarland Plumbing sizes, installs, and inspects gas and electric tankless systems for homes in Farmers Branch, with pricing provided in writing first.
Book your installation online to begin, or browse our full plumbing services to refresh aging kitchen and bath fixtures while we are on site.
If your tank is over 10 years old, leaks, runs cold during back-to-back showers, or you want the closet space back, a tankless upgrade is worth getting priced. We first inspect your setup and usage.
We confirm the fuel type, check the gas line and meter or panel capacity, add the correct venting, mount the unit, and then pull a permit for the required pressure test and inspection. Most installs finish in a day.
Gas units deliver higher flow for whole-home demand. Electric units fit smaller loads and tight spaces but draw high amperage. We base it on your peak flow and existing gas and electrical service.
Tankless units cost more to install, but they last longer than a tank and eliminate standby losses from reheating stored water. Over a 15 to 20 year life, many Farmers Branch homeowners recover the difference, and financing keeps the monthly number comfortable.
Farmers Branch surface water arrives much colder in winter, so your unit has to heat it across a larger temperature gap and deliver fewer gallons per minute. A system sized to winter inlet temperatures, the way we size every install, holds output all year.
Book a consultation now. We provide a written estimate, size the system for your home, and schedule the installation and inspection around your schedule.
From slab leaks under the foundation to sewer line repipes, every job is diagnosed, documented, and done right. A look at recent work across North Dallas.
Excellent customer service, very friendly staff from the person taking the call to the staff fixing the repairs. Very trustworthy company. Shaun explained the step-by-step process and provided very fair prices.
Their positive, upbeat, anxious-to-please attitude made the whole process the very best it could be! All of the employees were a pleasure to work with. I highly recommend Herndon McFarland.
Trent and Reggie were the most professional associates entering our home. They treated our home with respect as if it were theirs. We will use this company again because of them and our experience.
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One-time use. Cannot be combined with any other coupon or offer. MENTION AT SCHEDULINGSave on any water slab leak repair or full reroute under your foundation.
Cannot be combined with any other offer or coupon. MENTION AT SCHEDULINGSave on any water heater replacement, tank or tankless.
Cannot be combined with any other offer or coupon. MENTION AT SCHEDULINGSave on any plumbing service call or faucet replacement.
One-time use. Cannot be combined with any other offer or coupon. MENTION AT SCHEDULINGServing Addison and the surrounding metro. Click your city for its service area page.
