Our Services
At Merten Plumbing & Heating Inc., we’re proud to offer a full range of plumbing and hydronic heating services for homeowners and small businesses throughout Oshkosh, WI and the surrounding areas. With four generations of family experience behind us, we provide everything from routine maintenance to advanced system installation and emergency repairs. Read More…
Plumbing Services
We provide complete plumbing services to ensure your water systems are working safely and efficiently. Whether you’re dealing with leaks, poor water pressure, or outdated fixtures, we offer practical solutions and expert craftsmanship you can rely on.
General Plumbing Repairs
and Maintenance
We offer full-service plumbing repairs and inspections for homeowners in and around Oshkosh. Our team is trained to troubleshoot and resolve a wide variety of issues affecting water supply and drainage.
Our plumbing services include:
- Leak detection and pipe repairs
- Fixture replacement (sinks, faucets, toilets, tubs)
- Drain cleaning and unclogging
- Garbage disposal repairs and installation
- Valve and shut-off replacement
- Water pressure regulation and correction
- Re-piping and plumbing for remodels and additions
- Outdoor spigot repairs and winterizing
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Tank Water Heater Installation
and Repair
Traditional tank water heaters remain a reliable option for many homes, and we install and repair them every day. Whether your water heater is leaking, underperforming, or due for replacement, we’re here to help.
We service all makes and models and can recommend the best option for your household’s size and hot water needs. Services include:
- New tank water heater installations
- Thermostat and heating element repairs
- Powered Anode rod instillation
- Sediment flushing
- Expansion tank service
- Pilot light and gas valve troubleshooting
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Tankless Water Heater Installation and Repair
Tankless water heaters provide hot water on demand, saving space and energy. Our team installs, services, and repairs systems for homes throughout Oshkosh.
Pros of tankless systems include:
- Lower energy usage
- Longer lifespan
- Endless hot water
- Space-saving design
- Cons of tankless systems include:
- More expensive than tanks
- Require maintenance to descale
- Our tankless services include:
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Water Well
Systems
Homes on private wells need specialized plumbing support—and we’re one of the few teams in the area with the hands-on experience to deliver it. From pump replacements to pressure tank repairs, we ensure your well water system works safely and reliably.
We provide:
- Well pump installation and replacement
- Leak detection and repair in well lines
- Pressure tank maintenance
- No-water emergency service
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Water Conditioning and Filtration Systems
If you’re dealing with hard water, mineral staining, or unpleasant taste and odor, we offer whole-home water conditioning solutions tailored to Oshkosh’s unique water profiles.
Our water treatment services include:
- Water softener installation and repair
- Iron filter setup and maintenance
- Whole-home filtration systems
- Reverse osmosis drinking systems
- Annual system testing and tune-ups
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Hydronic Heating Services
We offer complete hydronic heating systems to help you maintain a comfortable, energy-efficient home year-round. Our team of Hydronic experts works with a variety of heating systems, including hydronic setups, boiler heat, in-floor heating systems, and high-efficiency equipment that meets today’s performance standards.
We understand the climate here in Oshkosh and design systems that are tough enough to handle long winters.
Hydronic Systems
Hydronic heat uses water to circulate warmth through radiators, baseboard heaters, or radient floor tubing. It’s one of the most comfortable and efficient forms of heating available, especially for homes that need quiet, consistent performance.
We specialize in hydronic heating system services including:
- New system design and installation
- Circulator pump replacements
- System balancing and zoning
- Thermostat upgrades
- Annual Cleaning and maintenance
- Air bleed and noise correction
If your home has an older hydronic setup, we can retrofit and upgrade it with modern components to improve efficiency and control.
Boiler Heating Systems
Boiler systems are a reliable choice for Wisconsin winters. We work on all boiler types, including cast iron, wall-mounted, and condensing models. Whether you’re upgrading to a high-efficiency model or simply maintaining your current unit, we have the tools and training to get the job done right.
Our boiler services include:
- High-efficiency boiler installation
- Radiant floor heating design and service
- Troubleshooting and repair of existing units
- System flushing and leak detection
- Expansion tank service and replacement
- Zone valve and pump diagnostics
If your boiler is noisy, inefficient, or fails to heat consistently, we’ll inspect the system and recommend affordable, long-term solutions.
High-Efficiency Boilers
Energy-efficient systems reduce your utility costs and carbon footprint. We install high-efficiency boilers that meet or exceed modern standards for performance and reliability.
Advantages include:
- Lower fuel consumption
- Smaller footprint
- Quieter operation
Our team will size the system to your home, evaluate venting and zoning requirements, and provide full installation with ongoing support. We also offer annual maintenance plans to keep your equipment running efficiently for years to come.
Hydronic Maintenance and Seasonal Tune-Ups
All heating systems, no matter how new or efficient, need regular maintenance to stay in top shape. We offer annual and seasonal service plans that help prevent breakdowns, improve performance, and extend the life of your investment.
Our Hydronic system maintenance includes:
- Combustion and safety checks
- System cleaning and lubrication
- Control and thermostat testing
- Ventilation and airflow inspection
- Heat exchanger examination
- Leak checks and efficiency analysis
When your system is properly maintained, you benefit from lower operating costs, fewer repairs, and greater peace of mind.
Why Choose Merten Plumbing & Heating Inc.?
With so many service providers in the area, it’s important to understand what makes us different. We take pride in delivering more than just technical skill—we offer lasting relationships, honest guidance, and community-focused service.
Here’s what sets us apart:
Generations of Experience
Full-Service Approach
Lifetime Value Focus
24/7 Service for Repeat Customers
Local Knowledge and Integrity
Get in Touch
Whether you need a fast repair, a new system install, or expert advice on your home’s plumbing or Hydronic setup, we’re ready to help. We aim to make every service call simple, straightforward, and stress-free. Call today to speak with our team, request a quote, or schedule an appointment. We’ll take the time to understand your needs and provide solutions that make sense for your home and your budget. Merten Plumbing & Heating Inc.—Oshkosh’s trusted experts in plumbing and hydronic heating systems. Five generations of service. One promise: we’re here when you need us.