Gavita LEDs BACK IN STOCK! | TEXT 347-504-3913 or EMAIL For BULK Discounts

Quest 506 Commercial Overhead Dehumidifier
Quest 506 Commercial Overhead Dehumidifier
Quest 506 Commercial Overhead Dehumidifier
Quest 506 Commercial Overhead Dehumidifier

Quest 506 Commercial Overhead Dehumidifier

Brand: Quest Climate
Item Number: 700950

Regular price $6,935.95 $6,935.95 On Sale

✔ Free & Discreet Shipping on ALL orders in the USA

✔ Lowest Price Guarantee

✔ No Sales Tax

✔ Questions? Contact Us for Expert Customer Support

Why Buy From GrowLight Heaven

The industry’s first 500-pint dehumidifier, the Quest 506 Commercial Overhead Dehumidifier is powerful and efficient for tough commercial spaces. Its 506 pint capacity makes it one of the most powerful commercial dehumidifiers on the market.

Product Features


  • Extremely Energy Efficient: Quest's patent-pending coil technology, which is unique to this model, allows for higher efficiency in a smaller unit. It pulls only 11 amps and has a maximum efficiency of 8.1 pints/kWh. No high-capacity dehumidifier on the market can remove 500 pints of moisture in such a small frame. Using less amps also means less heat comes off the unit, which is another bonus if you're using this model in growing spaces. 

  • Versatile: The Quest 506 Commercial Overhead Dehumidifier is common in large commercial environments thanks to its unique design: Operates in any temperature between 56 and 95 degrees F. A gravity drain hose is included for removing the excess moisture it collects. You can either drain it outside or into a reservoir.

  • You Air, Cleaner: Superior MERV 13 Filtration: Air exiting the dehumidifier is filtered with a MERV 13 filter, which catches tiny non-visible particles like smoke, smog, bacteria, microscopic allergens and debris. Filter changes are suggested 6-8 weeks if the dehumidifier is being used in growing spaces.

  • Integrated Handle: Heavy-duty handles are integrated into the design if you need to move this dehumidifier. The threaded rod handles can attach to a 3/8-inch rod (not included) if you choose to use it as an overhead dehumidifier. Moving this 280-pound model will require at least two people. 

  • Auto-restart after power outages.

  • Remote Humidistat Required: A remote humidistat is required for use. This humidistat is a popular choice for our customers.

  • Made In The USA: The Quest 506 Commercial Overhead Dehumidifier is proudly made in America.

  • 5-Year Warranty: Quest Climate backs up your purchase today with a 5-Year Warranty on sealed parts, and a 1-Year Warranty on parts and labor.


Included In Your Package

  • Quest 506 Commercial Overhead Dehumidifier

  • Power Cord

  • 3/4 Threaded Drain Hose

  • Owners Manual


Additional Add-On Options

We offer our customers additional add-on options if you so wish. In order to select your add-on options, use the drop-down menu by the "Add-To-Cart" button above.

1. Required Additional Humidistat: An additional Humidistat is required; we recommend the DEH 3000R Wall Mounted Unit. It Features fan/filter operation and programmable ventilation timer. It has a large, easy-to-read, backlit LCD display. The DEH 3000R has high temperature cut-out, a dry cycle timer and auto reboot feature.

You can also choose the Remote wall mounted humidistat made by Honeywell. It is adjustable from 20%–80% RH humidity with positive On and Off settings. 

2. Optional Condensate Pump Kit: A condensate pump kit is available from the factory for use with the Quest 506. Condensate is automatically pumped to a remote location when the water level in the pump's reservoir rises to close the float switch. The pump also contains a safety float switch.

3. Optional Additional Quest 506 MERV-13 Replacement Filter: The Quest 506 is equipped with two high-efficiency MERV-13 media filters. We suggest you replace both filters at the same time. Measures 20 in x 18 in x 2 in.

Additions Purchased Separately

  • Quest 506 Exhaust Duct Kit: The Exhaust Duct Kit allows duct work to be attached to the intake on the Quest 506 Dehumidifier. This allows the dehumidifier to be located outside of the indoor garden. This two-piece kit comes with a duct adapter, collar plate and screws to install it. The collar plate has 12 in round collars. It is 27.57 in x 21.5 in x 4 in.

  • Quest 506 Intake Duct Kit: The Intake Duct Kit allows duct work to be attached to the intake on the Quest 506 Dehumidifier, so it can be located outside of the indoor garden. This two-piece kit comes with a duct adapter, collar plate and screws to install it. The collar plate has 12 in round collars. It is 36.2 in x 21 in x 12.75 in.

*Duct Kits Available For Purchase Separately Here


Product Specifications

  • Industrial Use: Indoor Growing/Greenhouse
  • Pint Capacity: 506 pints
  • Low Temperature Operation (41 degrees F and Under): No
  • Low Grain Refrigerant (LGR): No
  • Desiccant: No
  • Internal Condensate Pump: No
  • Auto-Restart: Yes
  • Color: White
  • Refrigerant Type: R-410A
  • Ductable: No
  • Casters: No
  • Maximum Amperage: 11 Amps
  • Lowest Operating Temperature: 56 degrees
  • Energy Factor: 3.8 L/kWh
  • Safety Certifications: ETL
  • Automatic Defrost: No
  • Wi-Fi Capable: No
  • Bluetooth Capable: No
  • Maximum Cubic Feet per Minute (CFM): 1,480 CFM
  • Filter Type: MERV 13
  • Continuous Drain Capable: Yes
  • Humidistat: No
  • Drain Hose Included: Yes
  • Drain Hose Diameter: 0.75 in.
  • Full Bucket Indicator/Auto Shutoff: No
  • Water Container: No
  • Energy Star: No
  • Voltage: 220-240 V
  • Maximum Wattage: 2700 W
  • Weight: 280 lbs.
  • Depth: 44.7 in.
  • Height: 33.8 in.
  • Width: 28.9 in.
  • Drain Hose Length: 8 ft.

Free Shipping. Free Returns. All the time.

Order Confirmation:
As soon as you place your order, you will receive an order confirmation e-mail. This means that we have received your order in our system and pre-authorized your credit card for the purchase.  As soon as we receive your order, we automatically reach out to our suppliers to confirm that it is in stock and available for immediate shipment.  If your item is on back-order or unavailable, we will void the pre-authorization and reach out to you via e-mail.  If your item(s) are available for immediate shipment (within 5 business days), we will process the charges and submit the order for shipment.
Order Shipment:
Usually, orders ship within If your order is stock and we process the charges to your credit card, it will ship within 1-3 business business days from the date of your order.  Depending on the supplier, it can take up to five business days for the order to ship. We will send you tracking information within 24 hours of your order leaving the warehouse to the e-mail address you provided when checking out.  If you do not receive tracking information from us within six business days of your order, please follow up with us at
Customer service is everything to us. We want you to be 100% satisfied and that is why we placed an extremely easy returns process in place. Because we represent many different brands, please see below detailed return policy for each brand. For the brands that have return policies in place, we have a no-questions asked return policy based on their policy. 
Some brands also charge a re-stocking fee. This is an extra fee that they charge because they need to re-stock the item in their warehouse. If applicable, it is listed below by each manufacturer. GrowLight Heaven guarantees free returns even in these cases, so you have a risk-free purchase with free returns always.
Please note that in order to be eligible for a return and refund, the item must be unused and in it's original packaging, with all components present (cords, hangers, etc.)
Below are the return policies for each supplier:
  • Amare Technology: No Returns (unless damaged/defected)
  • Black Dog LED: 90 Day Returns (One return limit per customer)
  • California Lightworks: 90 Day Returns
  • G8LED: 90 Day Returns
  • GE Lighting: 90 Day Returns
  • The Green Sunshine Company: 100% refund & free return ship within 30 days, 120 day return policy w/ 15% restock fee
  • Gorilla Grow Tent: 30 Day Returns
  • Growers Choice: No returns (unless damaged/defected)
  • Kind LED: 90 days for K3 and K5 series; 30 days for bar lights. Only 2 Kind LED lights can be returned.
  • Mars Hydro: No returns (unless damaged/defected)
  • Matristar: 30 Day Returns with restocking fee
  • Spectrum King LED: 30 Day Returns
  • SuperCloset: 30 Day Returns
  • Toggled: No returns (unless damaged/defected)
  • TopGrow Lighting: No returns (unless damaged/defected)
  • TotalGrow: 90 Day Returns
  • Viparspectra: 30 Day Returns
Damaged/Defective/Incorrect Products:
If you receive a damaged, defective, or incorrect product(s), we will pay for the return shipping costs as well as pay for getting the product(s) to you. If damaged, please ensure you reject the item(s) and/or let the courier know that the product is damaged at delivery, otherwise a full refund may not be possible. GrowLight Heaven will not pay the return shipping charges for more than one product if it is not damaged/defective/incorrect. These shipping charges will be subject to the respective brand/companies prices and policy. Depending on where you live, the time it takes for your product(s) to reach you, may vary. Allow up to 2-3 weeks in rare cases.
In the event that the damged/defective/incorrect item was a gift, then please see below instructions regarding the gift scenario:
If the item was marked as a gift when purchased and shipped directly to you, you’ll receive a gift credit for the value of your return. Once the returned item is received, a gift certificate will be mailed to you. If the item wasn’t marked as a gift when purchased, or the gift giver had the order shipped to themselves to give to you later, we will send a refund to the gift giver and he will find out about your return.
Cancellations & Refunds:
At GrowLight Heaven, we want our customers to be 100% satisfied with their orders. If you are not 100% satisfied with your order, you can AfteAll orders cancelled after 48 hours are subject to a $20 administration fee, whether or not your order has shipped.  If you order has shipped, you (the buyer) will also be responsible for actual return shipping charges. Refunds will only be issued to the original credit card that you use when placing your order.
Each brand that we work with has its own warranty that they stand behind. For your convenience, the length of the warranties for each brand are listed below:
  • Amare Technology: 5 year warranty
  • Black Dog LED: 5 year warranty
  • California Lightworks: SolarXtreme: 1 year warranty. SolarSystem: 5 year warranty
  • G8LED: 2 year warranty
  • GE Lighting: 5 year warranty
  • The Green Sunshine Company: 3 year warranty
  • Gorilla Grow Tent: 1 year warrany
  • Growers Choice: 3 year warranty
  • Kind LED: 3 year warranty
  • Mars Hydro:3 year warranty
  • Matristar: 3 year warranty
  • Spectrum King LED: 3 years on the light engine to retain 90% or better of its original light output and 5 years on all other materials and workmanship.
  • SuperCloset: 3 year warranty
  • Toggled: 6 Years/Lifetime- Depending on the product
  • TopGrow Lighting: 5 year warranty
  • TotalGrow: 5 year warranty

Best Price Guarantee means Best Price Guarantee.

At Grow Light Heaven, we work very hard to ensure that we offer the absolute best prices online.  If you find another online store that offers a lower price then us within six months of your purchase date please let us know and we will refund your original payment for the difference.  We want you to feel confident that you are getting the absolute best price for the product you are ordering.  If you find that our own website has a lower price for the same item you have ordered within six months of your purchase date will refund the difference as well.
To request your partial refund simply e-mail us a link to the same product on our website, or on our competitors website within six months from the date of your order and we will process the credit accordingly.
Our 100% Price Guarantee has some limitations:
  • You must purchase the item from our website before requesting your Price Match Guarantee
  • Promotions such as rebates and buy one, get one free offers are not eligible
  • The item must be in stock on the competitors website
  • The competitor must be an online store, they may not have a retail location
  • The website can not be a discounter or auction website (ie; eBay, overstock, etc..)
  • The competitor must be an Authorized Retailer of the product in question
  • The Price Match Guarantee includes the item price and the shipping charges, it excludes sales tax

Customer Reviews

No reviews yet

Commercial grower? Buying in bulk? Bundling dehus and lights?

Call Us or Text Us: 347-504-3913 for fast and expert support.