Whether you’re budgeting for a new water heater, wondering why your hot water keeps running out, or trying to figure out what size unit your Annapolis home actually needs, you’ve come to the right place. Heidler Plumbing has been installing, repairing, and replacing water heaters throughout Annapolis, Severna Park, Arnold, and Anne Arundel County since 1947. Here are the questions we hear most from local homeowners.
How much does water heater installation cost in Annapolis?
Water heater installation costs in the Annapolis area typically range from $900 to $2,000 for a standard tank water heater (unit plus labor), and $1,800 to $3,500 for a tankless unit. The wide range reflects differences in fuel type (gas vs. electric), tank capacity, efficiency rating, brand, and the complexity of the installation. Homes that require new gas line work, electrical panel upgrades, or venting modifications will be on the higher end. Anne Arundel County permit fees add a modest cost — typically $50–$150 — which your plumber should pull on your behalf. At Heidler Plumbing, we provide upfront pricing before any work begins so you’re never surprised by the final bill.
What size water heater does my Annapolis home need?
Tank size is primarily determined by the number of people in your household. A rough guide for tank water heaters: 1–2 people need a 30–40 gallon tank; 3–4 people need 40–50 gallons; 5 or more people typically need 50–80 gallons. For tankless units, sizing is measured by flow rate (gallons per minute), not storage capacity — you’ll need a higher BTU unit if multiple fixtures run simultaneously. Factors like large soaking tubs, multiple bathrooms, or high hot water demand can push you toward a larger size than the rule of thumb suggests. Hard water common in parts of Anne Arundel County also accelerates sediment buildup, which reduces effective capacity over time. A licensed plumber can assess your home’s actual hot water demand and recommend the right size — not just the most popular one.
Do you service all water heater brands?
Yes — Heidler Plumbing services and installs all major water heater brands, including Rheem, Bradford White, A.O. Smith, Navien, Noritz, Rinnai, State Water Heaters, and more. We stock commonly needed parts for high-demand brands to speed up repairs. When replacing a unit, we’ll recommend the brand and model that best fits your home’s configuration, fuel type, and budget — not just what’s most convenient for us. We have strong working relationships with local wholesale suppliers, which allows us to source and install equipment quickly, often within 24–48 hours of your initial call. If you have a preference for a specific brand, let us know and we’ll work with it whenever possible.
Is a permit required to replace a water heater in Maryland?
Yes, in Anne Arundel County and most Maryland jurisdictions, a plumbing permit is required to replace a water heater — even if it’s a direct like-for-like swap. The permit triggers an inspection by the county to verify the installation meets current Maryland plumbing code, including proper venting, pressure relief valve placement, seismic strapping (for certain locations), and gas line connections if applicable. Some homeowners are surprised by this, but it’s an important protection — an uninspected water heater installation can create safety hazards and may complicate a home sale down the line. Heidler Plumbing handles permit applications on your behalf as part of every installation job. You won’t have to navigate the county office yourself.
What’s the difference between a gas and electric water heater?
Gas water heaters heat water faster and typically cost less to operate than electric models — natural gas is generally cheaper per BTU than electricity in Maryland. However, gas units require proper venting (either traditional flue or direct-vent) and a gas line connection. Electric water heaters are simpler to install (no venting needed), tend to have lower upfront costs, and are easier to maintain — but monthly operating costs are higher in most cases. Heat pump electric water heaters are an exception: they’re highly efficient (2–3x more efficient than standard electric), though they cost more upfront and require adequate space and ambient temperature to operate effectively. The right choice depends on your home’s existing fuel source, available space, and long-term energy goals. Heidler Plumbing installs and services both gas and electric models throughout the Annapolis area.
How do I extend the life of my water heater?
Three maintenance tasks can meaningfully extend your water heater’s lifespan. First, flush the tank annually to remove sediment buildup — hard water common in parts of Anne Arundel County accelerates sediment accumulation, which insulates the heating element and forces it to work harder. Second, inspect and replace the anode rod every 3–5 years. This sacrificial metal rod prevents tank corrosion — once it’s depleted, the tank itself begins to rust from the inside out. Third, test the pressure relief (T&P) valve every year to make sure it opens and closes properly. Neglecting this inexpensive valve is one of the most common causes of dangerous pressure buildup. Heidler Plumbing offers water heater maintenance appointments throughout Annapolis and Anne Arundel County — a tune-up typically costs $75–$150 and can add years to your unit.
What are early warning signs my water heater is about to fail?
Catching a failing water heater before it becomes an emergency can save you from a flooded utility room. Watch for these warning signs: rusty or discolored hot water (indicates internal tank corrosion); rumbling or popping sounds during heating cycles (sediment accumulation on the heating element); water pooling around the base of the tank (often a hairline crack or failing connection — call immediately); inconsistent water temperature or hot water that runs out faster than it used to; and a unit older than 10 years with no recent maintenance. Any one of these alone is worth a professional inspection. Multiple symptoms together usually mean replacement is imminent. Heidler Plumbing can assess your unit and give you an honest timeline so you can plan rather than react to an emergency replacement.
Are heat pump water heaters worth it in Maryland?
Heat pump water heaters (also called hybrid electric water heaters) are significantly more energy-efficient than standard electric tank models — typically 2 to 3 times more efficient — and Maryland homeowners may qualify for federal tax credits of up to $300 under the Inflation Reduction Act for installing one. The tradeoffs: they cost more upfront ($1,200–$2,000 for the unit), require at least 1,000 cubic feet of unconditioned or semi-conditioned space (a large basement or utility room works well), and are less effective when ambient temperatures drop below 40°F. For Maryland homeowners with basements, a heat pump water heater can deliver meaningful long-term savings, especially given Maryland’s relatively high electricity rates. Heidler Plumbing can evaluate your home’s suitability and walk you through the available rebates and tax incentives before you decide.
Need Help? Contact Heidler Plumbing
For water heater installation, repair, and replacement in Annapolis, Severna Park, Arnold, Edgewater, Davidsonville, Gambrills, Millersville, and throughout Anne Arundel County, Heidler Plumbing is ready to help. We’ve been Maryland’s trusted plumber since 1947 — with over 988 five-star reviews and 8 consecutive Best Plumber awards. Call us any time at (410) 268-7191 or contact us online to schedule a water heater inspection or get a free installation estimate.
