20+ Years
Serving KC Metro
Plumbing, Heating & AC
Service & Repair
Mission, KS
Family, Women & Veteran Owned • Serving Johnson County Since 2003
We Exceed Expectations
Full Nelson has served Johnson County families since 2003, and Mission is one of the shortest drives we make. This is the most compact city in the county, 9,954 residents inside 2.67 square miles, sitting at an elevation of 1,004 feet in the middle of the northeast Johnson County suburbs.
The name goes back much further than the city does. An Indian mission was established at this site in 1829, and the settlement that grew up later took its name from it. Mission itself incorporated in 1951, which places its housing squarely in the postwar wave. Learn more about our company.
- Family, Women & Veteran Owned
- Licensed & Insured Technicians
- Serving the Area Since 2003
Expert Plumbers
Plumbing Services in Mission, KS
Mission is described as a residential community of varied home designs on generous lots, and that variety is real: unlike the single-developer subdivisions nearby, Mission filled in with different builders working in different years, so the house next door may have nothing in common with yours behind the walls. Practical effect: a technician cannot assume here. The house has to be read on its own terms.
What most Mission homes do share is age. A city that incorporated in 1951 has housing now around seventy years old, which puts galvanized supply lines, cast iron drain stacks and original sewer laterals all at or past the end of their designed service life. Full Nelson’s licensed plumbers diagnose based on what is actually installed rather than what the street suggests.
Licensed & Insured
All work guaranteed
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Drain Cleaning
Rock Creek runs through Mission, and the low ground along the creek corridor is where drainage trouble concentrates. During heavy rain the storm system in this part of the county can surcharge, which pushes water toward floor drains instead of away from them. A floor drain that backs up only during a downpour is telling you something different from one that backs up on a dry day. Full Nelson provides drain cleaning services and works out which problem you actually have before quoting a fix.
For more serious issues, we offer:
- Drain cleaning
- Rooter services
- Clogged sinks
- Showers
- Floor drains
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Sewer Repair and Replacement
Sewer laterals installed when Mission built out in the early 1950s are around seventy years old. Clay tile joints open as ground shifts, and trees planted when these lots were new have had seventy years to find them. Full Nelson uses video camera inspection to see the actual condition of the line, shows you the footage, and explains your sewer repair options before quoting work.
Our services include:
- Sewer line repair and installation
- Sewer video inspection
- Trenchless excavation using pipe bursting technology
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Sump Pumps and Battery Backup Systems
Basement drainage in the Rock Creek corridor deserves real attention rather than a builder-minimum pump and a hope for the best. Full Nelson installs sump pumps and battery backup systems sized to the water your lot produces. Battery backup matters because the thunderstorms that fill a sump pit are the same ones that take down power lines, and a pump without power is not a pump.
Our services include:
- Sump pumps
- Battery backup systems
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Gas Leaks and Gas Repairs
Natural gas heats nearly every Mission home and feeds water heaters, ranges, dryers and grills. Homes from the early 1950s frequently still carry original black iron gas piping, and threaded joints work loose as a house settles over seventy years. If you smell the rotten egg odor of natural gas, hear hissing near an appliance, or see grass dying in a line across the yard, call immediately. Full Nelson locates the leak, repairs it, and pressure tests the system.
Our services include:
- Gas leak detection
- Gas leak repair
- Gas line testing
- Gas line installation
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Toilet Repairs and Replacements
A running toilet adds hundreds of gallons to the monthly bill. Repeated clogs usually point to the drain line or vent rather than the fixture, and in seventy-year-old homes that have been remodeled once or twice, a drain rerouted during a bathroom update without correcting slope or venting is a frequent culprit. Full Nelson diagnoses the actual cause and completes repairs that address it.
Our services include:
- Toilet repairs & replacements
- Flapper replacements
- Toilet rebuilds
- Water-efficient toilets
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Faucets and Shower Valves
Shower valves that will not hold a steady temperature have worn cartridges, and in an original 1950s bathroom the valve body is often from a manufacturer that stopped supplying parts decades ago. Full Nelson can tell you quickly whether a valve is serviceable or whether the wall needs opening, and we handle faucet and shower valve work throughout the house.
Our services include:
- Kitchen faucets
- Bathroom faucets
- Shower valves
- Tub fixtures
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Water Filtration
Mission receives municipal water from WaterOne, which serves most of Johnson County and softens at the treatment plant before distribution. WaterOne water runs roughly 83 parts per million, about 4.8 grains per gallon, which is moderately hard and notably softer than several neighboring systems. Chlorine taste and sediment picked up in distribution still reach the tap, and street and utility work in an area can stir sediment loose. Full Nelson tests your water and recommends filtration based on measured results.
Our services include:
- Whole-home water filtration systems
- Water quality assessment
- Filtration solutions
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Water Softeners
At 4.8 grains per gallon, Mission water still leaves scale in water heaters and spotting on glass, though more slowly than in cities on harder supply. Whether a softener earns its cost depends on household size, water usage and what equipment you are protecting. Full Nelson measures hardness at your tap and gives you a straight answer rather than selling a softener into every house we enter.
Our services include:
- Water softeners
- Water softener installation
- Water softener service
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Well Pumps and Well Tanks
A small number of properties around the edges of Johnson County still draw from private wells. When a submersible pump fails or a pressure tank bladder ruptures, the house loses water entirely. Full Nelson diagnoses well system problems and replaces pumps, pressure tanks, pressure switches and related components.
Our services include:
- Well pumps & Well tanks
- Low water pressure issues
- Short cycling
- Pump failure
Expert Plumbers
Excavation Services Mission, KS
Mission packs a lot of infrastructure into 2.67 square miles, and the city is in the middle of a substantial rebuild of its main street. The $13 million Johnson Drive reconstruction between Lamar Avenue and the Metcalf Avenue bridge began in August 2026 and runs through six phases toward completion in spring 2027, with storm connection work part of the scope. Working underground in a city this compact means coordinating carefully with what is already happening around you. Full Nelson provides excavation services and recommends trenchless methods wherever the site allows.
Licensed & Insured
All work guaranteed
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Water Main Line Repair and Replacement
The water service line from the meter to the house carries every gallon the household uses. Lines installed in the early 1950s corrode, and seventy-year-old root systems press against them. Warning signs include a wet patch that never dries, pressure that dropped throughout the house, or a bill that rose without a change in habits. Full Nelson locates the fault and completes water main line repair or replacement.
We offer:
- Water main line repair
- Water main line replacement
- Restoring water service
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Sewer Line Repair and Replacement
Clay tile and cast iron sewer lines from the early 1950s are past the 50 to 70 year window they were built to serve. When camera inspection shows damage beyond what spot repairs can handle, full replacement is the practical answer. Full Nelson handles sewer line excavation and installs modern materials rated for decades of service.
Our services include:
- Sewer line repair
- Sewer line replacement
- Video inspection
- Recommending a solution
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Septic Tank Repair and Replacement
Properties outside municipal sewer service rely on septic tanks to treat household wastewater. Slow drains throughout the house, gurgling in the pipes, sewage odor outdoors or saturated ground over the tank all indicate a system needing attention. Full Nelson inspects septic systems and completes the repairs needed to restore function.
Our services include:
- Septic tank repair
- Septic tank replacement
- System inspection
- Identifying issues
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Septic Lateral Field Repair and Replacement
The lateral field disperses treated effluent into surrounding soil for final filtration. When distribution lines clog with biomat, crush under vehicle traffic or fail from age, wastewater surfaces in the yard or backs up into the house. Full Nelson evaluates lateral field damage and performs repair or replacement.
Our services include:
- Septic lateral field repair
- Septic lateral field replacement
- System assessment
- Restoring proper drainage
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Trenchless Sewer Repair and Replacement
On a compact Mission lot, a traditional sewer trench takes out most of a front yard along with mature trees and often the driveway. Trenchless methods confine excavation to access pits at each end of the damaged run. Full Nelson evaluates whether trenchless work is viable for your property and explains the tradeoffs honestly.
Our services include:
- Trenchless sewer repair
- Trenchless sewer replacement
- Pipe bursting
- Pipe lining
- Installing new pipes
Fast & Reliable
Water Heater Services Mission, KS
Water heaters in Mission homes usually sit in basements or utility closets sized for 1950s equipment, and modern units are taller with different venting requirements. That turns what looks like a straight swap into a job that needs planning. Full Nelson provides water heater repair and installation for all system types and prices the work honestly, including whatever the venting actually requires.
Gas Water Heater Repair and Replacement
Gas water heaters heat faster and cost less to run than electric models in most Mission homes. Pilot assemblies that will not stay lit, failed thermocouples and sediment that causes rumbling are the common failures. Full Nelson services all major brands and installs replacement gas units sized to actual household demand.
Same Day
Service Available
Electric Water Heater Repair and Replacement
Electric water heaters serve homes where extending gas is impractical, including converted spaces and additions. Heating elements burn out, thermostats drift, and tank interiors corrode until they leak. Full Nelson diagnoses the fault and tells you whether repair or replacement is the better use of your money.
Tankless Water Heater Repair and Replacement
Tankless units heat on demand, remove the standby loss of keeping forty or fifty gallons hot around the clock, and mount on the wall rather than taking up floor space. In a compact 1950s utility area, recovering that floor space is often the deciding factor. Full Nelson services tankless systems from all manufacturers and installs new units.
Hybrid Water Heater Repair and Replacement
Hybrid water heaters pull heat from surrounding air and move it into the tank, using far less electricity than resistance elements. They work best in spaces that stay above 40 degrees year-round with enough air volume to draw from. Full Nelson installs and services hybrid systems and will say plainly when a utility closet is too tight for one.
Stay Comfortable Year-Round
Heating Services
Mission, KS
Kansas winters bring ice storms and extended cold snaps that push heating equipment hard. Full Nelson acquired a 25-year Kansas City HVAC company in 2019, adding decades of heating experience to our plumbing foundation.
Stay Comfortable Year-Round
HVAC expertise in Kansas City
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Furnace Repair, Installation, and Maintenance
Gas furnaces heat almost every Mission home. Because the city filled in through different builders in different years, duct layouts vary widely from house to house, and a system that works well in one home may be undersized or badly balanced in a neighbor’s. Full Nelson provides furnace repair for all makes and models and sizes replacement equipment to the house in front of us.
Our services include:
- Furnace repair & replacement
- Furnace installation
- Furnace maintenance
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Heat Pump Repair, Installation, and Maintenance
Heat pumps move heat rather than generating it and deliver heating and cooling from one outdoor unit. Cold-climate models hold efficiency well below freezing, which makes them a practical option in this climate. Full Nelson provides heat pump service for all brands and installs systems specified for our regional conditions.
Our services include:
- Heat pump repair and replacement
- Heat pump installation
- Heat pump service
- Heating system maintenance
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Filters, Humidifiers, UV Lights, and Indoor Air Quality
Heated winter air loses moisture rapidly, and indoor humidity below 30 percent causes static shocks, dry skin and irritated sinuses while opening joints in wood floors and trim. Full Nelson installs whole-home humidifiers, high-efficiency filters and UV light systems in ductwork.
Our services include:
- Improving indoor air quality
- High-efficiency filters
- Humidifiers
- UV lights
- UV light installation in ductwork
Breathe Easier
Air Conditioning Services
Mission, KS
Johnson County summers run into the 90s with humidity that makes it feel hotter. Full Nelson provides air conditioning services throughout Mission and the surrounding communities.
Stay Comfortable Year-Round
HVAC expertise in Kansas City
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Air Conditioning Repair, Replacement, and Maintenance
An air conditioner that runs constantly without cooling wastes electricity and wears out components early. Refrigerant leaks cut capacity, dirty coils block heat transfer, and failing capacitors force compressors to work against themselves. Full Nelson technicians diagnose the actual fault and complete AC repairs that restore cooling.
Our services include:
- Air Conditioning Repair & Replacement
- Air Conditioning Installation & Maintenance
- Refrigerant leaks
- Compressor problems
- Electrical failures
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Mini Split Repair, Replacement, and Installation
Mission’s 1950s homes were built before central air, and ductwork added later rarely delivers enough air to second floors, additions and converted spaces. Because Mission’s lots are generous relative to the house on them, detached garages and backyard studios are common, and none of them are on the main system. Mini splits handle both situations without opening walls.
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Filters, Dehumidifiers, UV Lights, and Indoor Air Quality
Summer humidity here promotes mold growth and makes rooms feel muggy even with the air conditioner running, and older basements hold that moisture longest. Whole-home dehumidifiers control it far more effectively than running the air conditioner harder. Combined with upgraded filtration and UV treatment, the difference is measurable.
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Duct Services
Ductwork retrofitted into 1950s homes leaks at seams that were never sealed to current standards, and much of it runs through unconditioned basements. Full Nelson provides duct cleaning and duct sealing.
- Power When You Need It
Generator Installation
Mission, KS
Mature tree cover through Mission’s residential streets is one of the things residents value about the city, and it is also what brings power lines down during ice storms and summer straight-line winds. Outages in tree-lined neighborhoods take longer to restore because crews have to clear vegetation before they can work. A standby generator starts automatically within seconds and keeps the refrigerator, HVAC system, sump pump and lights running.
Whole-Home Standby Generators
- Whole-Home Standby Generators
- Automatic startup during power outages
- Keeps lights, HVAC, and appliances running
- Protects against storm-related outages
Full Nelson sizes generators to your home’s actual electrical load and handles the complete installation, including the automatic transfer switch and natural gas connection.
For Local Businesses
Commercial Heating & Air Conditioning
Mission, KS
Mission carries an unusually large commercial base for a city of under 10,000 people, concentrated along Johnson Drive, which functions as a walkable main street of restaurants, bars, salons, specialty retail and professional offices. Radio station studios operated by Cumulus Media and Entercom are based in the city. Businesses on a main street under active reconstruction have a particular interest in equipment that does not fail during the disruption, and in a contractor who can work around lane closures and phased access. Full Nelson provides commercial HVAC services and commercial plumbing, including scheduled maintenance programs that catch problems before they close a kitchen.
Commercial HVAC
Installation, Repair & Maintenance
Walk-In Coolers
Service and Repair
Freezers
Commercial Freezer Service
Refrigeration
Maintenance Programs
24/7 Emergency Service
Mission, KS
A burst supply line at 3 AM or a furnace that quits during an ice storm cannot wait for business hours.
Full Nelson provides true 24/7 emergency service. When you call, a real person answers and dispatches a technician to your Mission home. We respond day or night, weekends and holidays included.
The Full Nelson Difference
Why Mission Homeowners Choose Full Nelson
Nearly 10,000 customers across the Kansas City metro use Full Nelson for plumbing and HVAC work.
Straightforward Communication
Our technicians explain what they find and present options without sales pressure. You understand what a repair involves and what it costs before we begin. No surprises when the invoice arrives.
Trained, Certified Technicians
Every team member receives ongoing training on current equipment and techniques. The technician in your home has the skills to complete the work correctly the first time.
True Local Ownership
Shawn and Heather started Full Nelson in 2003 and still own it today. We answer to our neighbors, not a corporate office in another state.
We Stand Behind Our Work
Full Nelson guarantees every job. If something is not right, we come back and make it right.
Save More Every Year
Total Home Care Club
Join our Total Home Care Club for scheduled maintenance and member benefits. Regular service keeps systems running efficiently, catches problems before they become emergencies, and extends equipment life.
Member Benefits
- 10% member rate discount
- 24/7 guaranteed service
- Plumbing & drain checkups
- Priority scheduling
- Seasonal Maintenance
- Promotional Discounts
Regular maintenance = fewer breakdowns + lower energy bills
Schedule A Service in Mission, KS
Ready to schedule plumbing, heating or air conditioning service? Contact Full Nelson today.
Leawood Office
4901 W. 136th Street
Leawood, KS 66224
Kansas City Office
8525 Parallel Parkway
Kansas City, KS 66112
We offer financing options to help manage larger repairs and installations. Ask about current specials and coupons when you call.
Johnson County & Beyond
Service Areas Near Mission
Full Nelson also serves Merriam, Prairie Village, Overland Park, Shawnee and Leawood. See all service areas.