At Royal Air Conditioning & Heating, Inc, they aim to provide users with quality HVAC repairs, maintenance, and replacements. They are fully trained and certified with over 30 years of experience performing everything from regular inspections and cleanings to installing and replacing residential and light commercial HVAC systems.

RunTru is a dependable HVAC brand, but at a price point that makes it the answer to heating and cooling needs. This new product is also designed, engineered, tested, and assembled in America.

Rushing is an MEP (mechanical, electrical & plumbing) engineering and sustainability consulting firm offering a full spectrum of integrated services which includes energy analysis, lighting design, and commissioning. They provide Mechanical engineering, electrical engineering, plumbing engineering, sustainability consulting and much more.

Ruskin is a manufacturer of innovative air control products, including manual, fire, smoke, combination fire/smoke, and industrial dampers, louvers, air measuring stations, sound attenuators, diffusers, and Energy Recovery Ventilators.

Safe House Air Services is the best Air Duct cleaning service in the Houston Metro Area. 10 years of serving all of the local neighbors has allowed them to come up with exactly what all the residents need.

SafeTraces works on a mission to ensure the highest safety standards for the air we breathe. It delivers veriDART™, a solution for verifying safe indoor airflow.

Sales ​​Engineers Inc. is a manufacturers' representative selling to the heating, plumbing and specialty refrigeration markets. Their emphasis is on distributor oriented business with a contractor/dealer focus. They represent the following manufacturers: Purolator, Broan-Nutone, Gastite, Nortek Global HVAC, First Company, Lenox, Hilmor, Shurtape, and Thermaflex.

Sanhua is a manufacturer of HVAC&R controls and components, with a global presence and over 30 years of experience. Working together with the largest companies in the automotive, appliance, and HVAC&R sectors,

SANI-VAC Service provides high-quality indoor air cleaning services, including HVAC units, air ducts, and kitchen exhaust cleaning for commercial, industrial, and institutional organizations. It offer much heating and cooling cleaning services including air duct cleaning, ventilation cleaning, coil cleaning, HVAC cleaning, commercial kitchen exhaust degreasing, cooling tower cleaning, and ductwork inspections.

Santa Fe Indoor Air Quality Solutions is located in Madison, Wisconsin, and is part of Therma-Stor. Therma-Stor was established in 1977 to apply advanced heat transfer technologies to residential and commercial markets. In addition to the Santa Fe brands, Therma-Stor® also manufactures Quest™ commercial dehumidifiers and the Phoenix™ line of restoration equipment.

Sauer is the full service Mechanical Contracting Company providing HVAC, Industrial Piping, Plumbing, Instrumentation, and Maintenance Services. Sauer Group is a division of Sauer Holdings Inc., headquartered in Pittsburgh, Pennsylvania.

SCI USA provides HVAC solutions for all manner of systems controlled by thermostats including Fan Coil systems, Building Automation, remote Telephone Controlled Thermostats, Fan Cycler Thermostats and Flush mounted designer thermostats.

Scot Pump is a O.E.M manufacturer that specializes in End Suction Centrifugal pumps. While many of Scot's competitors have a broader product line that encompasses many different types of pumps, Scot has directed its focus on End Suction Single Stage Centrifugals, and boasts to have the best delivery, customer service, and quality in the industry.

Since 1935, Sealmaster bearings are the industry's preferred bearing product, known for its premium-quality mounted ball-bearing line, as well as its mounted roller bearings.

Sears Heating & Cooling was founded by Johnny and Lillian Sears in 1950. They believed that Columbus needed a reliable heating and cooling company to keep families warm during the harsh winters and cool during the hot summers.

Sensata Technologies is a pioneer suppliers of sensing, electrical protection, control and power management solutions. Sensata's products improve safety, efficiency and comfort for millions of people every day in automotive, heating, air-conditioning and ventilation, data, telecommunications, recreational vehicle and marine applications.

Sera™ is the fastest growing preferred software solution for the world's most successful plumbing, HVAC, and electrical companies who are ready for the new ERA in Service Automation!

Seresco Technologies Inc. is a renowned US-based manufacturer of highest quality, technologically advanced and energy efficient dehumidifiers.

Service Experts is a big company with home-town heart. They’re passionate about making the world a cozy place to live. Whether they’re warming, cooling, or making the water run, they take great pride in keeping the customers and communities comfortable and satisfied.

Service Plus is a customer-service focused heating, cooling and plumbing company with a client base dating back to 2003.

The Shafer Services Plus family (Shafer) has been a pioneer in building and servicing San Antonio’s public and private heating, cooling and plumbing infrastructure for more than a century.

Shafer's HVAC, Inc. is a family-owned and operated business started by Mike Shafer in 1973. They serve thousands of families and businesses in the region, including Allegheny, Armstrong, Butler, Indiana, and Westmoreland counties with promptness, integrity, and reliability.

Shamrock HVAC Services Top-Notch AC Installation Services in Maryland. They specialize in all phases of the Residential and Commercial HVAC industry plus complete maintenance, Repair & installation services. They also offer expert heating services in Dayton, MD, and AC repair services in Dayton system installation and service for residential and commercial customers in the Dayton area.

Shape Technologies Group is the global leader in ultrahigh-pressure process solutions. They are dedicated to providing the highest level of customer satisfaction whether they are a first-time or long-time partner. They take pride in the commitment to supporting customers throughout the lifecycle of the UHP solutions.

Shook Mfg. Products Inc. specializes in fasteners and tools for over fifty years now. They provide products with high-quality design, performance and usability. Their range of products include tools & hardware for the HVAC/R, roofing, and many other home improvement industries.

Sid Harvey's is a multi-disciplinary distributor company with a network of 76 branches. They handle multiple renowned brands. This company remanufactures HVAC products as well.

Siemens provides quality standard products ranging from valves and actuators to sensors and thermostats. Energy efficiency, easy handling and long lifecycles are among the essential features of every single one of their products. And open communication standards like KNX and BACnet enhance compatibility and easily allow for seamless integration into building automation and control systems.

Sila Heating & Air Conditioning was started in 1989 by Jack Rothacker, third-generation heating, and air conditioning professional who took the company from a family business to one of the largest and most respected regional heating and air conditioning companies in the northeast, with operations from Maryland to Massachusetts.

Skil – aire, division of Tithe Corp is a wholly-owned subsidiary of Baltimore, Maryland based Tithe Corporation, an environmental control and air conditioning products and services company that delivers integrated product technologies for cooling and enthalpy control solutions.

Skuttle Indoor Air Quality Products specialize in Indoor Air Quality, humidifiers, make-up air controls, air cleaners, air cleaner replacement media.