Trusted Home Comfort Solutions from a Local, Family-Owned Company for 50+ Years

Residential Plumbing, Heating & Air Conditioning

As your local residential plumbing and HVAC experts based in Lamar, Missouri, we’re proud to serve homeowners throughout Lamar, Nevada, and Carthage, MO with reliable, full-service solutions for all their plumbing, heating, and cooling needs.

Plumbing Services HVAC Installation Emergency Repairs Septic Services Drain & Sewer Cleaning Boiler & Floor Heat Mini‑Split & Heat Pumps Duct Fabrication Grease Trap Service Backflow Services

Home Plumbing & HVAC Services You Can Trust in Lamar, MO

At Clements Plumbing Heating & Air, we’re committed to delivering reliable, high-quality service to homeowners throughout Lamar, MO, and nearby communities including Nevada and Carthage. Whether you’re building a new home or need help with an unexpected issue, our team brings over 50 years of experience to every job. We offer full-service residential plumbing, heating, cooling, septic, and drain services—backed by certified technicians, trusted brands, and honest workmanship.

Air Conditioning Contractor Services

When summer hits, we make sure your home stays cool, efficient, and comfortable. Our air conditioning services include full installations, repairs, and tune-ups—no matter what kind of system you rely on.

Central Air Conditioning – The most common residential cooling solution, great for even temperature control throughout the home.
Ductless Mini-Splits – A perfect solution for additions, remodels, or homes without ductwork. These systems offer zoned cooling and energy savings.
Heat Pumps – Dual-function systems that provide both heating and cooling, making them ideal for year-round use.
High-Efficiency Systems – We install ENERGY STAR® certified models that help lower your utility bills while keeping your space cool.
Smart Thermostat Integration – Upgrade your AC system with modern controls that allow you to adjust settings from your phone and optimize comfort.

Whether you’re looking for better airflow, reduced humidity, or system upgrades, we offer expert AC service.

Heating Contractor Services

From cold snaps to long Missouri winters, we provide dependable heating solutions that keep your home warm. Our technicians are skilled in a wide range of heating system installations. We also offer replacements and repairs to suit your space and preferences.

Split Systems – Ideal for standard residential heating setups, these systems deliver reliable performance and can be paired with central air for year-round comfort.
Boilers – We install and service efficient hot water boilers, a great option for radiant baseboard heat or in-floor heating systems.
Radiant Floor Heating – Perfect for even, quiet warmth underfoot—especially in bathrooms, kitchens, and basements.
Ground Source Heat Pumps – An eco-friendly, energy-efficient heating option that uses the stable temperature of the earth to heat your home.
Gas & Electric Furnaces – Whether you’re upgrading or replacing, we handle a full range of furnace services for efficient home heating.

Whether you’re retrofitting an older system or building new, we deliver custom heating solutions to your home.

Duct Fabrication & Installation

Efficient ductwork is the backbone of your heating and cooling system. Poorly designed or aging ductwork can lead to energy loss, inconsistent airflow, and higher utility bills. That’s why we offer custom duct fabrication and professional installation to ensure your HVAC system performs at its best.

Our team fabricates sheet metal ductwork in-house, tailoring each component to the exact needs of your home. Whether you’re building new, or replacing old ducts, we take precise measurements and design a layout that maximizes airflow and minimizes strain on HVAC units.

We work with galvanized steel, aluminum, and other materials to suit your project, and all ducts are sealed and insulated according to code. Once installed, we test the system for balance and efficiency to ensure optimal performance in every room.

Plumbing Contractor Services

If you’re building a new home or planning a remodel, you need a licensed plumbing contractor you can trust. Our team provides professional residential plumbing installation for kitchens, bathrooms, laundry rooms, and more. We handle everything from rough-in plumbing and fixture hookups to complete system layouts and repiping. Every system we install meets local building codes and is designed for efficiency, durability, and long-term performance. We work directly with homeowners and general contractors to ensure the plumbing is done right the first time.

Plumbing Repairs

Even small plumbing issues can become big problems if left unchecked. That’s why we offer fast, dependable residential plumbing repair services for leaks, clogs, burst pipes, running toilets, and more. Our experienced plumbers arrive equipped to quickly diagnose and fix the problem using high-quality parts and tools. Whether it’s a dripping faucet or a major water line break, we provide professional repairs with minimal disruption to your home. We also offer preventative maintenance to keep your plumbing in top shape.

Drain Cleaning & Repair

Backed-up sinks, slow tubs, and gurgling toilets are signs of a larger issue in your drain system. We offer professional drain cleaning and repair services to clear clogs and restore flow. For more serious problems, like cracked or collapsed pipes, we provide expert repairs and replacements using durable materials and modern methods. Our team diagnoses the source of the problem and fixes it properly—helping you avoid recurring issues and costly water damage.

Septic System Design & Installation

Building in a rural area or outside city sewer service? We specialize in residential septic system design and installation. From soil testing and permitting to excavation and final hook-up, we manage every step with precision. Our team installs code-compliant systems designed to handle daily use efficiently while protecting your property and groundwater. Whether it's a new build or a full system replacement, we’ll help you choose the right system for long-term reliability.

Septic Pumping

Routine septic pumping is critical for maintaining a healthy and functional system. We provide prompt, professional pumping services for residential tanks, removing waste before it causes clogs, odors, or system failure. Our team ensures your tank is emptied properly, inspects for signs of damage or buildup, and offers guidance on a recommended pumping schedule. With over five decades of experience, we help homeowners avoid costly backups and extend the life of their septic system.

Hydro Jetting Services

Hydrojetting is a powerful technique to remove stubborn obstructions within your sewer and septic lines. This high-pressure water jetting method eliminates debris, grease, and other build-ups, leaving your plumbing system clean and flowing smoothly. We are proud to be the only plumbing company in our service region with a 'jetter' truck!

Water Heater Service

We provide expert installation, repair, and maintenance for both tank and tankless water heaters. Whether you're dealing with leaks, inconsistent temperatures, or no hot water at all, we’ll quickly identify the issue and offer reliable solutions to restore comfort and efficiency to your home.

Gas Lines

From new gas line installation to leak detection and repairs, we offer safe and code-compliant gas plumbing for your home. Our licensed team handles everything from gas stoves and fireplaces to water heaters and HVAC systems, ensuring reliable service and peace of mind.

Water Lines & More

In addition to our core plumbing and HVAC services, we also provide expert water line installation and repair. Whether you're dealing with low water pressure, aging pipes, or need new lines for a remodel or addition, we ensure clean, reliable connections that last. From trenchless water line solutions to frost-proof outdoor fixtures, our team handles it all with precision.

Don’t see your service need listed?

We offer a wide range of residential plumbing and HVAC solutions beyond what’s shown here. If you have a unique request or an unexpected issue, give us a call. Our experienced team is happy to discuss your project, provide honest recommendations, and deliver the right fix for your home.