NEILSON PLUMBING LLC
5017 BROWN ST
Licensed Plumbing/Heating & A/C Contractors in Davenport, IA.
Water Heater Replacement for Older Homes for older homes in Davenport — navigating aging infrastructure, code updates, and compatibility surprises. Our 35 vetted contractors are experienced with pre-1980 homes and will flag issues before they become problems.
Typical cost in Davenport
$800–$3,000 / project
35 contractors in Davenport
5017 BROWN ST
Licensed Plumbing/Heating & A/C Contractors in Davenport, IA.
613 6 STREET W APT 3
Licensed Plumbing/Heating & A/C Contractors in Davenport, IA.
2702 E PLEASANT STREET
Licensed Plumbing/Heating & A/C Contractors in Davenport, IA.
3117 HICKORY GROVE ROAD
Licensed Plumbing/Heating & A/C Contractors in Davenport, IA.
5545 CAREY AVENUE
Licensed Plumbing/Heating & A/C Contractors in Davenport, IA.
5121 TREMONT AVENUE
Licensed Plumbing/Heating & A/C Contractors in Davenport, IA.
702 W 76TH STREET
Licensed Plumbing/Heating & A/C Contractors in Davenport, IA.
1316 W 4TH STREET
Licensed Plumbing/Heating & A/C Contractors in Davenport, IA.
5442 CAREY AVENUE
Licensed Plumbing/Heating & A/C Contractors in Davenport, IA.
2324 HICKORY GROVE ROAD
Licensed Plumbing/Heating & A/C Contractors in Davenport, IA.
9003 NORTHWEST BLVD.
Licensed Plumbing/Heating & A/C Contractors in Davenport, IA.
3029 W 34 STREET W APT
Licensed Plumbing/Heating & A/C Contractors in Davenport, IA.
| Type | Size | Installed Cost |
|---|---|---|
| Electric tank | 40 gal | $750 – $1,200 |
| Electric tank | 50 gal | $850 – $1,500 |
| Gas tank | 40 gal | $900 – $1,400 |
| Gas tank | 50 gal | $1,000 – $1,800 |
| Gas tank | 75–80 gal | $1,400 – $2,500 |
| Type | Capacity | Installed Cost |
|---|---|---|
| Electric tankless | Whole-home | $800 – $1,500 |
| Gas tankless | Whole-home | $1,500 – $3,500 |
| Propane tankless | Whole-home | $1,600 – $3,800 |
Installation complexity: A simple swap in a garage is cheapest. Closet installs, attic installs, or units requiring new venting or gas line upgrades cost more.
Fuel-type switch: Converting from electric to gas (or vice versa) requires additional work — expect to add $300–$800.
Code upgrades: Older homes may need seismic strapping, an expansion tank, updated permits, or a drip pan — these are typically $100–$300 extra.
Brand and efficiency rating: Standard efficiency units are significantly cheaper upfront than high-efficiency or hybrid heat-pump models, but high-efficiency units save money monthly.
Don't wait for a full failure. A leaking or failed tank can cause thousands in water damage. If your unit is 10+ years old and having issues, get quotes now. Most plumbers can install a replacement within 1–2 business days.
Improper gas connections can cause explosions, fires, or slow carbon monoxide leaks. Licensed plumbers are trained and tested on gas piping, pressure testing, and leak detection. This is not a job for guesswork.
Water heater installations require permits in most jurisdictions. A licensed plumber pulls the permit, schedules the inspection, and ensures the installation meets current code — including seismic strapping requirements (in earthquake zones), temperature-pressure relief valve installation, and proper venting.
Most water heater manufacturers require professional installation by a licensed plumber to maintain the warranty. DIY installation voids warranty coverage entirely.
Improper connections or a failed pressure relief valve can cause flooding. A licensed plumber ensures all connections are tight, the T&P valve is correctly installed and vented, and the drip pan and drain are properly configured.
An undersized heater means cold showers. An oversized one is wasteful. A professional assesses your household's peak demand, number of bathrooms, and fixture usage to recommend the correct capacity and fuel type.
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