


Free Shipping
On orders above 200$

Lowest Price
Guaranteed or We’ll Match It

No Sales Tax
No Sales Tax—Except in Michigan

Easy Returns
Always hassle free

Call Us
(844) 873-5764
On orders above 200$
Guaranteed or We’ll Match It
No Sales Tax—Except in Michigan
Always hassle free
(844) 873-5764
Commercial Dehumidifier for Grow Rooms
Take full control of your growing environment with this powerful commercial dehumidifier. Built for serious facilities, it delivers 345 pints/day of water removal with patented M-CoRR™ multi-coil refrigeration, MERV-13 air filtration, and voltage options for 208/230V or 277V. Whether you’re optimizing a grow tent, climate room, or industrial process area — this model gives you pro-level humidity control without the hassle.
✅ Quick-Glance Benefits
💧 345 PPD Moisture Removal High-capacity drying at 80°F/60% RH to stabilize VPD and prevent mold. |
⚙️ M-CoRR™ Multi-Coil Efficiency Recycles excess heat for top-tier efficiency with reduced BTU output. |
🏭 208/230V or 277V Options Choose the voltage your facility uses; higher voltage frees amperage for other gear. |
🛡️ MERV-13 Air Filtration Captures fine particulates for cleaner, healthier air and product quality. |
🔌 Plug-and-Play & Auto-Restart Fast setup with onboard digital controls and power-loss recovery. |
🚚 Fast, U.S. Shipping Ships quickly from U.S. warehouses with dedicated support. |
1x Quest 335 Dehumidifier (select 208/230V or 277V at checkout)
1x MERV-13 Air Filter (20" x 22" x 2")
1x Power Cord (voltage-appropriate plug)
Onboard digital control (low-voltage terminal block)
Owner’s documentation
✔️ Commercial grow rooms & greenhouses
✔️ Industrial/warehouse humidity control
✔️ Food & beverage process areas
✔️ Labs, R&D, and technology spaces
📉 Lowest Amp Draw in Class Higher efficiency means less heat added to rooms and more power left for lighting/HVAC. |
🧭 Wide Operating Range Performs from 56°F to 95°F across diverse RH conditions for year-round reliability. |
🧲 Flexible Placement Overhead rack or ground placement with integrated handles for easier moves. |
🧪 Title 24 Compliant Meets California requirements for ducted and non-ducted installs. |
🌎 R454B Refrigerant Modern refrigerant with reduced environmental impact versus legacy blends. |
Order the Quest 335 Dehumidifier today and take full control of your commercial environment — with smarter automation and reliable results.
Freestanding Unit
Can be mounted overhead with use of 3/8″ Threaded Rod
P-Trap Requirements
Capacity @ 80°F/60% RH: 345 PPD
Efficiency @ 80°F/60% RH: 8.0 Pints/kWh (Energy Factor 3.8 L/kWh)
Capacity @ 75°F/50% RH: 221 PPD
Efficiency @ 75°F/50% RH: 6.0 Pints/kWh (Energy Factor 2.8 L/kWh)
Airflow (CFM): 900
Operating Temperature: 56°F min – 95°F max
Dimensions (L×W×H): 32.9" × 24.6" × 23.7"
Unit Weight: 215 lb
Dehumidifier Type: Refrigerant (R454B, charge 3 lb 8 oz)
Drain Port: 3/4" threaded NPT
Fans: Variable-speed EC motor
Controls: Onboard digital controls + low-voltage terminal block
Filtration: MERV-13 (20" × 22" × 2")
Compliance: California Title 24 (ducted & non-ducted), UL Rated & ETL Listed
Electrical / Model Options (select at checkout):
208/230V (Part #4046200): 1-Phase, 60 Hz; Current Draw: 8.4A @208V / 7.6A @230V; Power Cord/Plug: 14ga NEMA 6-15P (6′)
277V (Part #4046210): 1-Phase, 60 Hz; Current Draw: 6.3A; Power Cord/Plug: NEMA L7-15P (6′)
Power (both): ~1,700 W
Total BTU: 21,500 (15,700 BTU heat of condensation + 5,800 BTU motor load)
Manufacturer Warranty: 5-Year Limited
Covers defects in materials and workmanship
Support handled directly through our team
Q: Which voltage should I choose — 208/230V or 277V?
A: Use 277V if your facility lighting/HVAC runs on 277V circuits (common in larger commercial builds). Choose 208/230V for standard commercial panels or mixed-use facilities. Both deliver the same 345 PPD performance.
Q: Can I hang this unit overhead?
A: Yes. The 335 supports overhead or ground placement. Follow Quest’s clearance guidelines and use appropriate supports.
Q: Does it restart automatically after a power outage?
A: Yes. Auto-restart returns the unit to prior settings on power restoration.
Q: How often should I replace the MERV-13 filter?
A: Inspect monthly in dusty or high-pollen environments. Replace as needed to maintain airflow and efficiency.
Q: Is this unit Title 24 compliant?
A: Yes, the Quest 335 meets California Title 24 for both ducted and non-ducted configurations.
Who We Are
At Garden GrowShop, we're not a faceless online retailer. We're a small, family-run business with real roots in the growing community. Every product we carry has been carefully chosen to meet the needs of both home growers and commercial operators — because we’ve walked in your shoes.
Personal, Knowledgeable Support
When you reach out to us, you’re not getting a canned reply or being passed between departments. You're talking to someone who actually knows the products, understands your challenges, and is here to help you succeed.
Transparent Pricing — No Gimmicks
We believe in fair, honest pricing. No inflated markups, no bait-and-switch tactics. If you ever find a better price on the same item, let us know — we’ll match it without the hassle.
Fast, Dependable Shipping
We ship directly from warehouses across the U.S. to get your order to you quickly and reliably. No inflated delivery timelines, and no surprise shipping fees — just smooth, on-time delivery you can count on.
A Partnership, Not a Transaction
Our customers stick with us because we treat them like partners. Whether you're outfitting a small indoor setup or managing a large-scale operation, we’re here to grow with you — not just sell you equipment.
Our Commitment
If something goes wrong, we don’t pass the buck. We work with you directly to make it right. That’s how we’ve built our business, and that’s how we plan to keep it.
We offer free shipping on all orders over $200 shipped to addresses within the continental United States. Orders under $200 will have shipping calculated at checkout. There are no hidden fees or handling charges. The price you see at checkout is the final price you pay.
Orders are typically processed within 1–2 business days (Monday–Friday). If an item is temporarily backordered or delayed, we’ll notify you by email with an updated shipping estimate.
Once your order has shipped, we’ll email you a shipping confirmation that includes tracking information. You can use this to monitor the delivery status of your package in real time.
We partner with trusted suppliers and manufacturers who maintain warehouse locations throughout the United States. Orders are typically shipped from the facility closest to your delivery address to ensure faster transit times and greater efficiency. Some orders may ship in multiple packages depending on item availability and warehouse location.
Most orders arrive within 3–7 business days of shipping, depending on your location and the item’s warehouse origin. Freight items and oversized packages may take additional time.
We use trusted carriers such as FedEx, UPS, USPS, and professional freight delivery services for large or heavy items. Depending on the size of your order, it may arrive in multiple packages or from multiple warehouses.
Please note: We do not offer moving or installation services. For freight shipments or large items, carriers are only responsible for curbside delivery. Drivers are not required to move items inside your home, up stairs, or to specific locations. We strongly recommend having assistance available at the time of delivery for heavy or bulky shipments.
Please ensure your shipping address is correct at the time of checkout. Once an order has shipped, we are unable to change the delivery address or reroute the shipment. If you need to make changes to your order, contact us immediately after placing it.
If your order arrives damaged or appears to be lost in transit, contact us within 48 hours of delivery (or expected delivery). We will work with the carrier to resolve the issue as quickly as possible.
We currently ship only to addresses within the continental United States. We do not ship to Alaska, Hawaii, U.S. territories, or international destinations.
If you have questions about your order, delivery, or shipping process, feel free to reach out to us through our Contact Us page or via email (sales@gardengrowshop.com ). We’re here to help.
Start of Returns section
Easy Returns, No Surprises
At Garden GrowShop, we stand behind the quality of every product we carry. But we also understand that sometimes things just don’t work out — and that’s okay. If you change your mind or the item isn’t quite what you expected, we’ve got you covered.
You have 30 days from the date of delivery to request a return for any reason. To start a return, simply email us at sales@gardengrowshop.com with your order number and we’ll walk you through the process.
Here’s what to expect:
You’ll receive clear return instructions from our team.
Once your item is received and inspected, we’ll issue a refund to your original payment method.
Items must be returned in “like new” condition, with all original packaging and accessories.
Return shipping costs are the responsibility of the customer.
“Like new” means no visible wear, damage, or missing parts. Items showing signs of use or misuse may not qualify for a refund.
If your order arrives damaged or defective, don’t worry — we’ll take care of it.
Here’s what to do:
Note any damage with the delivery driver when signing for the package.
Email photos and a description of the issue to sales@gardengrowshop.com on the same day you receive it.
We’ll cover the cost of return shipping and make sure a replacement is sent out quickly.
Please keep all original packaging in case a return is needed. This helps speed up the process and ensures a smooth resolution.
If you need to cancel your order, please contact us as soon as possible at sales@gardengrowshop.com or by phone.
Cancellations before shipment receive a full refund.
Cancellations after shipment will follow our standard return policy and may be subject to return shipping costs.
Certain products may have brand-specific return restrictions, which will be noted on the product page.
Products purchased for temporary or single-use purposes (e.g. trade shows, promotional events) are not eligible for return.
We’re Here to Help
Our goal is to make returns and exchanges as easy as possible — with no stress and no surprises. If you’re unsure whether your order qualifies or just want to ask a question, don’t hesitate to reach out. We’re here to make sure you feel confident before and after your purchase.
We’d love to hear from you!
If you decided not to purchase today, we’d like to know what held you back. Your feedback helps us improve and serve you better.
Was it the price, product description, reviews, shipping options, or something else? Tell us what made you hesitate, and we’ll send you a 5% discount code for your next order (valid on select products).
Contact us: https://gardengrowshop.com/pages/contact-us
We’re an authorized dealer for every brand we sell—so you’ll always get full manufacturer warranties, premium support, and authentic gear direct from the source.
✅ Fast, tracked shipping on all orders
✅ 100% safe and secure checkout
✅ No restocking fees on returns
✅ Friendly U.S.-based support when you need it
Have questions? We're here to help. Whether you're just getting started or scaling up a full grow, our experts can guide you to the right gear.
Commercial Dehumidifier for Grow Rooms
Take full control of your growing environment with this powerful commercial dehumidifier. Built for serious facilities, it delivers 345 pints/day of water removal with patented M-CoRR™ multi-coil refrigeration, MERV-13 air filtration, and voltage options for 208/230V or 277V. Whether you’re optimizing a grow tent, climate room, or industrial process area — this model gives you pro-level humidity control without the hassle.
✅ Quick-Glance Benefits
💧 345 PPD Moisture Removal High-capacity drying at 80°F/60% RH to stabilize VPD and prevent mold. |
⚙️ M-CoRR™ Multi-Coil Efficiency Recycles excess heat for top-tier efficiency with reduced BTU output. |
🏭 208/230V or 277V Options Choose the voltage your facility uses; higher voltage frees amperage for other gear. |
🛡️ MERV-13 Air Filtration Captures fine particulates for cleaner, healthier air and product quality. |
🔌 Plug-and-Play & Auto-Restart Fast setup with onboard digital controls and power-loss recovery. |
🚚 Fast, U.S. Shipping Ships quickly from U.S. warehouses with dedicated support. |
1x Quest 335 Dehumidifier (select 208/230V or 277V at checkout)
1x MERV-13 Air Filter (20" x 22" x 2")
1x Power Cord (voltage-appropriate plug)
Onboard digital control (low-voltage terminal block)
Owner’s documentation
✔️ Commercial grow rooms & greenhouses
✔️ Industrial/warehouse humidity control
✔️ Food & beverage process areas
✔️ Labs, R&D, and technology spaces
📉 Lowest Amp Draw in Class Higher efficiency means less heat added to rooms and more power left for lighting/HVAC. |
🧭 Wide Operating Range Performs from 56°F to 95°F across diverse RH conditions for year-round reliability. |
🧲 Flexible Placement Overhead rack or ground placement with integrated handles for easier moves. |
🧪 Title 24 Compliant Meets California requirements for ducted and non-ducted installs. |
🌎 R454B Refrigerant Modern refrigerant with reduced environmental impact versus legacy blends. |
Order the Quest 335 Dehumidifier today and take full control of your commercial environment — with smarter automation and reliable results.
Freestanding Unit
Can be mounted overhead with use of 3/8″ Threaded Rod
P-Trap Requirements
Capacity @ 80°F/60% RH: 345 PPD
Efficiency @ 80°F/60% RH: 8.0 Pints/kWh (Energy Factor 3.8 L/kWh)
Capacity @ 75°F/50% RH: 221 PPD
Efficiency @ 75°F/50% RH: 6.0 Pints/kWh (Energy Factor 2.8 L/kWh)
Airflow (CFM): 900
Operating Temperature: 56°F min – 95°F max
Dimensions (L×W×H): 32.9" × 24.6" × 23.7"
Unit Weight: 215 lb
Dehumidifier Type: Refrigerant (R454B, charge 3 lb 8 oz)
Drain Port: 3/4" threaded NPT
Fans: Variable-speed EC motor
Controls: Onboard digital controls + low-voltage terminal block
Filtration: MERV-13 (20" × 22" × 2")
Compliance: California Title 24 (ducted & non-ducted), UL Rated & ETL Listed
Electrical / Model Options (select at checkout):
208/230V (Part #4046200): 1-Phase, 60 Hz; Current Draw: 8.4A @208V / 7.6A @230V; Power Cord/Plug: 14ga NEMA 6-15P (6′)
277V (Part #4046210): 1-Phase, 60 Hz; Current Draw: 6.3A; Power Cord/Plug: NEMA L7-15P (6′)
Power (both): ~1,700 W
Total BTU: 21,500 (15,700 BTU heat of condensation + 5,800 BTU motor load)
Manufacturer Warranty: 5-Year Limited
Covers defects in materials and workmanship
Support handled directly through our team
Q: Which voltage should I choose — 208/230V or 277V?
A: Use 277V if your facility lighting/HVAC runs on 277V circuits (common in larger commercial builds). Choose 208/230V for standard commercial panels or mixed-use facilities. Both deliver the same 345 PPD performance.
Q: Can I hang this unit overhead?
A: Yes. The 335 supports overhead or ground placement. Follow Quest’s clearance guidelines and use appropriate supports.
Q: Does it restart automatically after a power outage?
A: Yes. Auto-restart returns the unit to prior settings on power restoration.
Q: How often should I replace the MERV-13 filter?
A: Inspect monthly in dusty or high-pollen environments. Replace as needed to maintain airflow and efficiency.
Q: Is this unit Title 24 compliant?
A: Yes, the Quest 335 meets California Title 24 for both ducted and non-ducted configurations.
Who We Are
At Garden GrowShop, we're not a faceless online retailer. We're a small, family-run business with real roots in the growing community. Every product we carry has been carefully chosen to meet the needs of both home growers and commercial operators — because we’ve walked in your shoes.
Personal, Knowledgeable Support
When you reach out to us, you’re not getting a canned reply or being passed between departments. You're talking to someone who actually knows the products, understands your challenges, and is here to help you succeed.
Transparent Pricing — No Gimmicks
We believe in fair, honest pricing. No inflated markups, no bait-and-switch tactics. If you ever find a better price on the same item, let us know — we’ll match it without the hassle.
Fast, Dependable Shipping
We ship directly from warehouses across the U.S. to get your order to you quickly and reliably. No inflated delivery timelines, and no surprise shipping fees — just smooth, on-time delivery you can count on.
A Partnership, Not a Transaction
Our customers stick with us because we treat them like partners. Whether you're outfitting a small indoor setup or managing a large-scale operation, we’re here to grow with you — not just sell you equipment.
Our Commitment
If something goes wrong, we don’t pass the buck. We work with you directly to make it right. That’s how we’ve built our business, and that’s how we plan to keep it.
We offer free shipping on all orders over $200 shipped to addresses within the continental United States. Orders under $200 will have shipping calculated at checkout. There are no hidden fees or handling charges. The price you see at checkout is the final price you pay.
Orders are typically processed within 1–2 business days (Monday–Friday). If an item is temporarily backordered or delayed, we’ll notify you by email with an updated shipping estimate.
Once your order has shipped, we’ll email you a shipping confirmation that includes tracking information. You can use this to monitor the delivery status of your package in real time.
We partner with trusted suppliers and manufacturers who maintain warehouse locations throughout the United States. Orders are typically shipped from the facility closest to your delivery address to ensure faster transit times and greater efficiency. Some orders may ship in multiple packages depending on item availability and warehouse location.
Most orders arrive within 3–7 business days of shipping, depending on your location and the item’s warehouse origin. Freight items and oversized packages may take additional time.
We use trusted carriers such as FedEx, UPS, USPS, and professional freight delivery services for large or heavy items. Depending on the size of your order, it may arrive in multiple packages or from multiple warehouses.
Please note: We do not offer moving or installation services. For freight shipments or large items, carriers are only responsible for curbside delivery. Drivers are not required to move items inside your home, up stairs, or to specific locations. We strongly recommend having assistance available at the time of delivery for heavy or bulky shipments.
Please ensure your shipping address is correct at the time of checkout. Once an order has shipped, we are unable to change the delivery address or reroute the shipment. If you need to make changes to your order, contact us immediately after placing it.
If your order arrives damaged or appears to be lost in transit, contact us within 48 hours of delivery (or expected delivery). We will work with the carrier to resolve the issue as quickly as possible.
We currently ship only to addresses within the continental United States. We do not ship to Alaska, Hawaii, U.S. territories, or international destinations.
If you have questions about your order, delivery, or shipping process, feel free to reach out to us through our Contact Us page or via email (sales@gardengrowshop.com ). We’re here to help.
Start of Returns section
Easy Returns, No Surprises
At Garden GrowShop, we stand behind the quality of every product we carry. But we also understand that sometimes things just don’t work out — and that’s okay. If you change your mind or the item isn’t quite what you expected, we’ve got you covered.
You have 30 days from the date of delivery to request a return for any reason. To start a return, simply email us at sales@gardengrowshop.com with your order number and we’ll walk you through the process.
Here’s what to expect:
You’ll receive clear return instructions from our team.
Once your item is received and inspected, we’ll issue a refund to your original payment method.
Items must be returned in “like new” condition, with all original packaging and accessories.
Return shipping costs are the responsibility of the customer.
“Like new” means no visible wear, damage, or missing parts. Items showing signs of use or misuse may not qualify for a refund.
If your order arrives damaged or defective, don’t worry — we’ll take care of it.
Here’s what to do:
Note any damage with the delivery driver when signing for the package.
Email photos and a description of the issue to sales@gardengrowshop.com on the same day you receive it.
We’ll cover the cost of return shipping and make sure a replacement is sent out quickly.
Please keep all original packaging in case a return is needed. This helps speed up the process and ensures a smooth resolution.
If you need to cancel your order, please contact us as soon as possible at sales@gardengrowshop.com or by phone.
Cancellations before shipment receive a full refund.
Cancellations after shipment will follow our standard return policy and may be subject to return shipping costs.
Certain products may have brand-specific return restrictions, which will be noted on the product page.
Products purchased for temporary or single-use purposes (e.g. trade shows, promotional events) are not eligible for return.
We’re Here to Help
Our goal is to make returns and exchanges as easy as possible — with no stress and no surprises. If you’re unsure whether your order qualifies or just want to ask a question, don’t hesitate to reach out. We’re here to make sure you feel confident before and after your purchase.
We’d love to hear from you!
If you decided not to purchase today, we’d like to know what held you back. Your feedback helps us improve and serve you better.
Was it the price, product description, reviews, shipping options, or something else? Tell us what made you hesitate, and we’ll send you a 5% discount code for your next order (valid on select products).
Contact us: https://gardengrowshop.com/pages/contact-us
We’re an authorized dealer for every brand we sell—so you’ll always get full manufacturer warranties, premium support, and authentic gear direct from the source.
✅ Fast, tracked shipping on all orders
✅ 100% safe and secure checkout
✅ No restocking fees on returns
✅ Friendly U.S.-based support when you need it
Have questions? We're here to help. Whether you're just getting started or scaling up a full grow, our experts can guide you to the right gear.