Install Instructions
Warn the homeowner to never take the unit out of the duct work, without rst turning 
the power switch o. Explain that all service must be performed by a licensed HVAC 
professional or the warranty will be voided.
Explain the danger of looking at the light emitted from the QwikPure TripleGuard™ unit
Show the homeowner the Green LED and Orange LEDs, and explain that they should 
be checked ideally with every air lter change or at least a few times a year. Explain that 
they need to call for service if any of these lights are o.
6 Year Limited Product Warranty
Mainstream Engineering Corporation (“Company”) expressly warrants only to the original end-use purchaser; that, for a period of six (6) years from the initial start-up by 
the installer of the QWIKPURE TRIPLEGUARD™ UV Air Sanitizer (the “Product”) will be reasonably free of defects in materials and workmanship. This Limited Warranty only 
applies to Company’s Products which are used, stored, handled, and installed in the manner recommended by Company. The Company will be the sole Party to make any 
determination of warranty claims.
Company will, at its option, replace Product without charge within one (1) year, or refund the cost of the Product, if the Product fails or does perform as warranted solely 
due to a manufacturing defect within the warranty period, subject to the exclusions set forth in this Limited Warranty. Repair or replacement during this one (1) year 
warranty shall not include labor and any costs associated with removal, repair or replacement of any xtures, hardware, decorative treatment, or any shipping costs to 
return the Product to the Company or to send either the original or new Product back to the recipient. During the entire one (1) year warranty, Company’s obligation as 
to repair or replacement shall further be limited to repair or replacement with the styles, models, products, and colors of the Product that are available at the time of the 
repair or replacement, and shall be limited to the repair or replacement of only the specic Product that fails due to a manufacturing defect. Any repaired or replaced 
product shall also remain subject to the original one (1) year warranty from the date of the original installation of the Product, and any repair or replacement shall not 
extend the original warranty period in any manner or start a new warranty period.
After the rst one (1) year period of this Limited Warranty as past, for the subsequent ve one (1) year periods, the Company will provide a rebate of a percentage of the 
original purchase price as a credit toward a new Product. For the rst subsequent one (1) year period, the Company will provide the original end use purchaser a rebate 
credit of 85% of the original purchase price to be applied to the purchase of a new Product. For the second subsequent one (1) year period, the Company will provide 
the original end use purchaser a rebate credit of 66% of the original purchase price to be applied to the purchase of a new Product. For the third subsequent one (1) year 
period, the Company will provide the original end use purchaser a rebate credit of 50% of the original purchase price to be applied to the purchase of a new Product. For 
the fourth subsequent one (1) year period, the Company will provide the original end use purchaser a rebate credit of 33% of the original purchase price to be applied to 
the purchase of a new Product. For the fth subsequent one (1) year period, the Company will provide the original end use purchaser a rebate credit of 15% of the original 
purchase price to be applied to the purchase of a new Product. 
You may obtain coverage under this Limited Warranty by providing Company with proof of purchase. For service under this Limited Warranty, you must notify Mainstream 
Engineering Corporation Customer Service Department at 1-800-866-3550 or info@qwik.com. 
Disclaimer of Warranties
Company’s Products must be stored, handled, installed, used and maintained in accordance with instructions provided by Company, and this Limited Warranty is 
conditioned upon compliance with all such instructions. Additionally, this Limited Warranty is conditioned upon submission of photographs evidencing the proper 
installation of the Product in the ductwork away from the air handler. Copies of the Company’s use guide; care guide; instruction manual, installation or fabrication guides, 
are available from the dealer; distributor etc. or from the Company at the address listed below. You may also obtain this/these materials on the Company’s website at 
www.mainstream-engr.com. 
This Limited Warranty does not cover defects caused by:
1.  non-compliance with Company’s use guide, care guide, instruction manual. Such failures include, but are not limited to, exposure to physical abuse, including, 
but not limited to impact, puncturing, dropping the Product, moving the Product once the Product has been installed, chemical abuse (e.g., harsh cleansers and 
solvents), thermal abuse or shock (e.g. excessive heat or cold), or misuse; 
2.  improper storage, installation, handling, use and/or fabrication of the Product; 
3.  damage not resulting from manufacturing defects that occur while the Product is in the customer’s possession;
4.  unreasonable or unintended use of Product;
5.  products installed with known or visible manufacturing defects at the time of installation, including, but not limited, to color variances;
6.  minor conditions such as stains, scratches, etc.;
7.  failure or dissatisfaction with appearance of styling or coloring. 
Any information or suggestion by Company with respect to the Products concerning applications, specications, or compliance with codes and standards is provided solely 
for your convenient reference and are made without any representation as to accuracy or suitability. You must verify and test the suitability of any information with respect 
to the Products for your specic application.
THE WARRANTIES SET FORTH HEREIN ARE THE ONLY WARRANTIES MADE BY COMPANY IN CONNECTION WITH THESE PRODUCTS. COMPANY CAN NOT AND DOES NOT MAKE 
ANY IMPLIED OR EXPRESS WARRANTIES WITH RESPECT TO THE PRODUCT, AND DISCLAIMS ALL OTHER WARRANTIES, INCLUDING, BUT NOT LIMITED TO, ANY WARRANTY OF 
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. PRODUCTS SOLD BY COMPANY ARE SOLD ONLY TO THE SPECIFICATIONS SPECIFICALLY SET FORTH BY COMPANY 
IN WRITING. OTHER THAN THE LIMITED WARRANTY SET FORTH HEREIN, COMPANY MAKES NO OTHER WARRANTIES, EXPRESS OR IMPLIED. COMPANY’S SOLE OBLIGATION 
UNDER THIS WARRANTY SHALL BE REPAIR OR REPLACEMENT OF NON-CONFORMING PRODUCTS, OR AT THE OPTION OF COMPANY, RETURN OF THE PRODUCT AND A REFUND 
OF THE PURCHASE PRICE. BUYER ASSUMES ALL RISK WHATSOEVER AS TO THE RESULT OF THE USE OF THE PRODUCTS PURCHASED, WHETHER USED SINGULARLY OR IN 
COMBINATION WITH ANY OTHER PRODUCTS OR SUBSTANCES. 
Limitation of Liability 
No claim by the buyer/owner of any kind, including claims for indemnication, shall be greater in amount than the purchase price of the Products in respect to which 
damages are claimed. IN NO EVENT SHALL COMPANY BE LIABLE TO BUYER/OWNER IN TORT, CONTRACT OR OTHERWISE, FOR ANY SPECIAL, INDIRECT, INCIDENTAL, 
CONSEQUENTIAL, RELIANCE, STATUTORY, SPECIAL, PUNITIVE OR EXEMPLARY DAMAGES, INCLUDING, BUT NOT LIMITED TO, LOST PROFITS, LOSS OF USE, LOSS OF TIME, LOSS 
OF REVENUES, INCONVENIENCE, LOSS BUSINESS OPPORTUNITIES, DAMAGE TO GOOD WILL OR REPUTATION, OR LOSS OF DATA, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH 
DAMAGES OR SUCH DAMAGES COULD HAVE BEEN REASONABLY FORESEEN, IN CONNECTION WITH, ARISING OUT OF, OR AS A RESULT OF, THE SALE, DELIVERY, SERVICING, USE 
OR LOSS OF USE OF THE PRODUCTS SOLD HEREUNDER, OR FOR ANY LIABILITY OF BUYER TO ANY THIRD PARTY WITH RESPECT THERETO. 
Contact Information
Any question concerning this warranty should be addressed to:
Mainstream Engineering Corporation, Attn: Customer Service • Address: 200 Yellow Place, Rockledge, FL 32955
Attention: Sales, Phone: 321-631-3550, Email: info@qwik.com • Website address: www.qwik.com










