Humidity problems?
Take control.

Save energy, save time, protect your investment. Time to make your humidity issues disappear.



Our engineers have developed an integrated approach to environmental controls that not only make our customers comfortable but also improves aesthetics and eliminates costly safety issues.

Here to help you master any environment.

Quest 876

Our highest capacity refrigerant dehumidifier — with patented coil technology available nowhere else.

Quest Dual 165

At 230V, efficient and flexible is the name of the game for this 165-pint-per-day capacity dehumidifier. Hang overhead or use ducting to keep the unit completely out of the way — the choice is yours.

Quest Hi-E Dry 195

Flexible and economical, with the strength to dehumidify spaces with heavy moisture loads.

Indoor Farming

Take control of your environment and say goodbye to mold and the crop losses that come with it.

Water Treatment

Your budget will enjoy the cost and labor savings of surfaces that don't need to be painted every year. And everyone appreciates safe, condensation-free floors.

Quest offers a robust, proven solution to your water treatment facility's humidity problems.

Cold Chain

Keep your coils out of defrost and protect your stored goods with our comprehensive line of energy-efficient dehumidifiers.


Keeping your facility clean and mildew-free.

Labs & Data Centers

When you need climate precision, count on Quest.


Quest has partnered with famed German manufacturer Trotec to bring you a new line of desiccant dehumidifiers designed to help you maintain precise humidity levels in your nutraceutical production facility.

Don't see your industry? Reach out — we can help you figure out what you need.

Getting Grow Rooms Right

Everything to need to know when it comes to HVAC Design, Specification, Selection, Installation and Operation. A must-read for everyone in the grow room industry. Get your complimentary digital copy today.