(8am-5pm mst mon-fri)

Customer Service

Ordering Options

Low Energy Systems supports many means to place your orders. Orders are processed Monday--Friday, 8:00am -- 3:00pm, MST.

Online - This is the fastest and preferred method to place your order, so feel free to place your order right here on our site. If you do not find what you are looking for, you can call at our toll free number: 1-800-873-3507. For expedited delivery on Saturday, please contact us directly at 1-800-873-3507.

Telephone - You may also place your order with an actual human over the phone, by calling 1-800-873-3507. Please have your credit card or other payment information ready when you call.

Fax - If you prefer to fax your order, please call us and will provide you with a form you can print and fax to us at 303-781-3608.

Office - If you are located near our headquarters in Colorado you may also visit our show room at the following address: 5350 Joliet Street Unit 1, Denver CO, 80239

Return Policy

Once a product has been shipped from our premises, if you wish to return it for reasons other than damage, please, note that our restock charge is minimum 20% of the cost of the returned item(s). Please inspect the contents of your order and report any damage or discrepancies within 48 hours of receipt. We do not accept returns of products after they have been installed. All shipping costs are not refundable. Return policy is limited to 30 days from the date of purchase. No returns on water heater parts. Products must be returned in original shipping container. Returns require a return authorization number.

Privacy Policy

Any and all information that we collect about our customers will not be sold, traded, or given to any other person or company, for any reason. We value your privacy, so your information will never leave our company.

Price Match Policy

Have you seen a lower price? Low Energy Systems works hard to give you great deals on our quality products. If you have found a better price for the same items at another authorized dealer, please call us at 800-873-3507. We will do our best to meet and/or beat that price. Low Energy Systems takes pride in our commitment to service, product knowledge, lifetime technical support, fast delivery and competitive pricing. (Price matching is applicable to identical products and similar conditions of sale.)

Payment Options

Orders placed during the weekend will be shipped the following Monday.

Money Order or Cashier's Check - Purchased items will be shipped immediately upon receipt.

Personal Check - Purchased items will be shipped on the tenth business day.

Credit Card - Purchased items will be shipped next business day.

PayPal - What is PayPal?

Accepted Credit Cards / International Credit Cards

American Express, Mastercard, Visa, Discover

Your credit card is charged only when your order is shipped.

Concerning Secure International Credit Card Transactions

Many Banking Institutions in Europe, the United Kingdom and elsewhere have special privacy rules. These institutions offer their customers International Credit Cards that are acceptable here in North America. These Banking Institutions also wish to keep their customers' privacy and security intact, including their customers' billing addresses.

Recently Credit Card Clearing Companies here in the USA have begun to offer acceptance of these "International" Credit Cards on a restricted basis. In order for us to process International Credit Cards here in the USA, it is required of us to make a billing address verification when your order is to be filled and credit card information is presented for authorization. We propose to comply with both sets of rules.

This is for your protection and the security of your personal credit card information. There are a number of ways for us to obtain acceptance of your International Credit Card, any one of these methods will suffice:

  1. Have your Issuing Bank call us in the USA, Toll-Free.

    You can have your Credit Card Issuing Bank contact us by calling Low Energy Systems Inc. toll free in the USA at 1-800-873-3507, ext. 3 or 1-888-778-3240 or by lease line 303-781-9437. We present your credit card information to your Bank and will need an address confirmation from them and/or an authorization (approval) code number for your transaction. Most International Banks will do this at no extra charge to you, their credit card customer.

  2. Have your Issuing Bank give us their USA or Canadian Toll-Free Phone Number.

    You can refer us to your Issuing Bank's toll free phone numbers here in the USA. We will be happy to call your Banks if possible and manually have the transaction secured with an authorization (approval) code. Most large International Issuing Banks have a North American toll free number for their Credit Card Holder's convenience. Our email address is sales@tanklesswaterheaters.com.

  3. You may send us with a "Photo ID" with your address:

    You may FAX us a copy of your Photo ID, usually a driver's license or passport page with your photograph and address as it appears on your credit card statements. We do not recommend that you send this photo and address information by e-mail as e-mail information may not be secure.

    Our FAX number is: 1-303-781-3608
    International Phone Number: +1-303-781-9437

Sales Tax

Colorado residents will have 7.72% sales tax added to their order.

Quality Statement

Each piece of merchandise is inspected when we receive it, and again before we send it to you. We are dedicated to selling only the highest quality items.

Dealers / Distributors / Representatives

Dealer Inquiries Invited!

Tankless water heater sales are expected to grow at double digit rates for the foreseeable future. Want to get into Business? Call us 1-800-873-3507 or click here to email us.

We offer special pricing and benefits for dealers, plumbers and contractors who install tankless water heaters. Such as:

  • Extra installation tips and help for hydronics equipment
  • Special low prices for large quantity orders
  • Unlimited fast reply email and phone technical support
  • As well as special deals, available for the contractors only.

We can also send you a catalog with trade pricing. To receive our catalog you will need to fax a copy of your plumbing license to 303-781-3608. Or you can mail it to us at:


Low Energy Systems, Inc.
5350 Joliet Street, Unit 1
Denver, CO 80239