Thielmann Heating, Cooling & Plumbing can assist you with all your heating, ventilation, and air conditioning (HVAC) repair issues in Wauwatosa, Wisconsin. We want you to spend more time with your friends and family and enjoy your weekends and time off at the Hank Aaron Trails without worrying about the HVAC system in your house.
With over 90 years of experience, we can ensure your systems work efficiently for comfortable temperatures at your home or business.
For HVAC services in Wauwatosa, look no further than The Thielmann Group.
Our Expert Heating Services
Wauwatosa winters are no joke, and the last thing you want is a heating system that can’t keep up. We are experts in the following heating services:
- Fast, reliable heating repairs: A broken furnace or boiler can’t wait. Our technicians provide prompt service to restore heat to your home.
- New heating system installations: If your heating system is outdated, we can install a high-efficiency option that improves comfort and lower energy costs.
- Preventive heating maintenance: Regular checkups help prevent unexpected breakdowns, keep your system running smoothly and extend its life span.
Our furnace repair technicians are ready to promptly restore your heat. We know the urgency of “no heat” situations during Wisconsin winters. Our NATE-certified technicians can visit you 24/7 for HVAC emergencies — not including plumbing service — and can service and repair all system makes and models.
Air Conditioning Repairs, Maintenance & Installation for a Comfortable Wauwatosa Home
Summers in Wauwatosa can be relentless, but your home should always be a refreshing escape. Our air conditioning services help keep your space cool and comfortable when temperatures rise.
- Air conditioner repair services: If your air conditioner is struggling, we’ll diagnose the issue and return it to peak performance.
- New AC Installation: We install modern, energy-efficient air conditioning systems for better cooling and lower energy bills.
- Routine AC maintenance: A well-maintained system runs more efficiently, prevents costly repairs, and lasts longer.
Dependable Plumbing Services in Wauwatosa
Plumbing issues can be a major hassle, but we make fixing them easy. Our professional plumbing services cover everything from minor leaks to major installations.
- Repairs and installations: From leaky faucets to new water heaters, we handle all your plumbing needs with expert care.
- Water conditioning solutions: Improve your home’s water quality for better-tasting and cleaner water.
- Sump pumps and pipe repairs: Prevent water damage and keep your plumbing system in top shape.
- Hose bib services: We replace faulty hose bibs to prevent damage to your home’s foundation, including three common types — standard, ball valve and frost-free.
A Plan for Extra Peace of Mind
Want extra peace of mind? Our maintenance plan includes annual tuneups and a water quality analysis to help prevent costly surprises. You’ll also get priority scheduling, a 15% discount on repairs and expert maintenance scheduling handled for you.
Comprehensive Plumbing Services in Wauwatosa, WI
When your home’s plumbing stops working right, you need a team you can count on. Thielmann Heating, Cooling, and Plumbing delivers dependable plumbing services for homeowners across Wauwatosa with reliability and efficiency. Our team of licensed, insured plumbers handle everything from small leaks to complete home piping replacements, giving you peace of mind that your home’s plumbing systems are in good hands.
For over 95 years, our team has built a reputation for honest service and skilled workmanship. We respond quickly, assess the issue, and explain your repair or replacement options before any work begins. You get clear communication and long-lasting repairs every time.
Thielmann’s line of plumbing services include:
- Water line repair and replacement for aging or damaged pipes.
- Fixture repair and installation for faucets, toilets, and showers.
- Drain cleaning and clog removal to restore proper flow.
- Sump pump repair and replacement to protect your basement from flooding.
- Water heater installation and repair, including tankless options.
- Garbage disposal repair and installation.
- Water conditioning systems to remove minerals and improve taste.
If you notice slow drains, low water pressure, or higher water bills, those are signs of a hidden problem. Our technicians use proven tools and methods to identify the cause and fix it fast.
Thielmann Heating, Cooling, and Plumbing is proud to serve Wauwatosa with reliable, professional plumbing services. Call (262) 299-6197 today to schedule an appointment and keep your home’s plumbing working reliably all year long.
Why Wauwatosa Chooses Thielmann Heating, Cooling & Plumbing
For nearly a century, homeowners in Wauwatosa have trusted us to keep their homes comfortable and running smoothly. Here’s why:
- Licensed and insured: Your home is in expert hands.
- Five-star service: We put our customers first and deliver top-notch workmanship.
- Flexible financing: We can provide budget-friendly options through our financing partners.
- Commitment to quality: Our team does the job right the first time.
Comfort Starts Here
From chilly winter nights to sweltering summer afternoons, our expert team is here to help with reliable heating, cooling and plumbing solutions. Whether you need fast heating repairs, an air conditioning upgrade or trusted plumbing services, we’ve got you covered.
Call our technicians at (262) 384-6407 to book an appointment. A comfortable, worry-free home is just a call away.
Read Reviews by Our Customers
Recent Jobs and Reviews in Wauwatosa, WI
Wauwatosa, WI at a glance
Thielmann Heating, Cooling & Plumbing has completed 20 jobs in Wauwatosa, WI between June 2026 and September 2026.
The most recent job was on September 22, 2026.
Job Locations and Reviews
Completed full furnace installation in basement mechanical room with all required permits obtained. New gray metal furnace unit installed on concrete pad with proper clearances, including connection of black flexible ducts, refrigerant lines with service ports, and white PVC venting system secured to floor joists with appropriate hangers. Licensed electrician completed all electrical connections and wiring in accordance with local codes. System tested and verified operational upon completion.
Responded to emergency service call for boiler with failed heat exchanger. Performed comprehensive assessment of existing Peerless P-206AH-WM1 low pressure boiler rated at 164,000 BTU/HR and documented equipment specifications and electrical connections. Provided estimate for complete boiler replacement due to heat exchanger failure requiring new unit installation.
Completed on-site estimate for mini-split installation in upstairs bedroom with sloped ceilings, currently served by portable air conditioning unit. Assessed electrical infrastructure including existing main panel, subpanel, and Generac backup power system to determine capacity and connection requirements for new mini-split system.
Completed comprehensive A/C tune-up on residential Rheem HVAC system located in basement mechanical room. Performed full system inspection including furnace cabinet, air handler, refrigerant lines, condensate drain system, and all associated components. Verified proper operation of white PVC exhaust and intake venting, checked copper refrigerant line connections, and confirmed all manufacturer labels and safety information remain legible and intact. System found to be in good working condition with organized component arrangement and clean installation.
Responded to service call for second opinion on reported boiler leak. Upon arrival, performed comprehensive inspection of boiler system and associated components including piping, valves, and connections. Evaluated all visible plumbing connections, pressure relief valve, circulator pump, and heat exchanger for signs of active leakage or moisture accumulation. Documented findings with photographic evidence of equipment condition and mechanical room layout for customer records and further assessment.
Responded to emergency service call for furnace evaluation. Upon inspection, determined heat exchanger failure requiring full furnace replacement. Provided comprehensive estimate for new furnace installation and discussed coordination with scheduled electrical service upgrade to ensure compatibility and proper integration of new HVAC system.
Successfully installed customer-supplied faucets at residential property, completing all connections to existing plumbing infrastructure. Installation included proper mounting of fixtures, connection of braided stainless steel supply lines, and verification of P-trap drainage system functionality. All components tested for leaks and confirmed operational upon completion.
Completed comprehensive AC tune-up on 15-year-old cooling system addressing customer concerns regarding condensation leakage and damaged filter slot with jagged, bent edges causing difficulty with filter replacement. Performed standard maintenance protocol including system diagnostics, electrical measurements, and component inspection of outdoor condensing unit. Documented equipment condition with detailed photography and verified proper system operation upon completion.
Installed 40-gallon Bradford White standard vent gas water heater in basement utility area. Unit was properly positioned, connected to existing copper supply lines with heat traps, installed pressure relief valve with discharge piping, and connected to gas supply with all necessary shut-off valves and controls verified operational.
Completed annual tune-up on residential split-system air conditioning unit, performing standard maintenance procedures and system diagnostics with digital testing equipment. Addressed thermostat connectivity issues preventing remote access via mobile devices and verified proper system operation upon completion.
Conducted on-site assessment for water heater replacement in mechanical room with exposed brick construction. Documented existing installation including copper and PVC plumbing connections, exhaust venting through masonry wall, and clearance measurements of approximately 6.5 inches between HVAC ductwork and equipment mounting location. Photographed current configuration to prepare replacement estimate.
Completed full HVAC system installation including new furnace and air conditioning unit in basement utility area. System installed on concrete pad with proper venting through PVC exhaust piping, condensate pump placement, and electrical connections coordinated with licensed electrician. All work performed under permit with professional ductwork connections and organized routing of refrigerant lines and drainage components.
Completed annual cooling system maintenance visit under membership agreement. Performed comprehensive A/C tune-up including inspection of outdoor condenser unit, replaced dirty 16x25x4 pleated air filter, and verified system operation. All components found functioning properly with unit maintaining proper airflow and cooling capacity.
Responded to callback for newly installed furnace experiencing loud noise for approximately 10 minutes. Upon arrival, performed thorough inspection of unit including electrical connections, terminal blocks, and control wiring. Verified all wire connections at terminal blocks were properly secured, checked low-voltage control wiring and power wiring for proper installation, and inspected internal components through service access panel. Documented system condition with photos showing electrical components, copper tubing connections, and overall assembly. Unit found to be operating normally at time of inspection with all connections secure and no abnormal sounds detected.
Completed full HVAC system installation including new air conditioning condenser unit and evaporator coil. Installed furnace unit in basement on concrete pad with proper ductwork transitions and copper refrigerant line connections routed overhead. Mounted outdoor condenser unit against exterior brick wall with refrigerant lines, electrical wiring, and condensate drainage properly secured using wall-mounted brackets. All electrical connections completed and system commissioned for operation. Installation performed without permit requirements per customer specifications, with electrical work handled by licensed electrician.
Completed comprehensive air conditioning tune-up service on residential split system with Armstrong furnace and outdoor condensing unit. Performed standard maintenance procedures including inspection of indoor and outdoor components, verified proper system operation, and documented equipment specifications with filter size notation (16x25x1) for future reference.
Conducted comprehensive assessment of residential HVAC system for replacement estimate. Evaluated existing 25-year-old Carrier furnace unit that had ceased operation and documented current equipment condition in basement mechanical room. Inspected electrical service panel to verify capacity and circuit breaker configuration for new system installation requirements. Customer expressed interest in upgrading to Lennox equipment to take advantage of available manufacturer rebates. Photographed existing furnace installation, ductwork configuration, water heater proximity, and electrical panel to support accurate equipment sizing and installation planning for replacement proposal.
Conducted comprehensive HVAC estimate for complete system replacement including existing furnace and air conditioning unit in basement utility area. Evaluated current equipment configuration, ductwork layout, and discussed customer requirements for potential additional heat runs to improve comfort and efficiency throughout the home.
Responded to no cooling complaint on residential air conditioning system. Upon arrival, confirmed indoor fan operation but outdoor condensing unit not running. Performed diagnostic evaluation of outdoor unit located at exterior foundation. Identified system failure preventing compressor operation. Recommended repair options to restore cooling functionality.
Conducted on-site estimate for complete HVAC system replacement due to non-functional air conditioning unit. Assessed existing furnace and AC equipment located in basement, documented electrical panel configuration and exterior condensing unit location, and provided comprehensive replacement recommendations for both heating and cooling systems.
