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eHVACR Supply puts all your essential HVACR products in one convenient online marketplace. Featuring in-house tested products, a responsive customer support team and industry-leading delivery times, Greatstone International Ltd. helps you serve your customers better! Greatstone International Ltd. caters to HVACR manufacturers and wholesalers with the following products


Copper Tubes

Copper tubes are most commonly used in heating systems and as a refrigerant line in HVAC systems. There are two basic types of copper tubes, namely soft copper and rigid copper.


Copper Fittings

Copper fittings are used to connect copper tubes. The fittings are connected to a copper pipe using the soldering method, and they can be used with both types of copper tubes.


AC Installation

An air conditioner (AC) is an appliance that cools down a space by removing heat from the air and moving it to the outside. It’s a complex apparatus, and in order to install it, there are several parts…



A thermostat is a device used to detect temperature changes to keep the temperature of an enclosed area consistent. It is commonly used to control the flow of fuel to a burner…



HVACR systems run on electricity, so they require several electrical components to function properly. The main electrical components in HVAC equipment are fan motors…



To ensure that an end product is of high quality, its components have to be from reliable sources. Durable and dependable components make the end products competent.


Other Products

Sometimes, HVACR appliances require other parts in addition to the main components. Some of the other important HVACR components are, Filter Driers: absorb system…


OEM Products

An original equipment manufacturer (OEM) is a company that produces components that are used in the products of another company, referred to as value-added reseller (VAR)…

Fast Delivery Throughout the U.S.A.

As HVACR contractors, you are understandably busy and have a lot of responsibilities,
so you need the HVACR components that you’ve ordered to arrive as soon as possible.

Greatstone International Ltd. is committed to delivering your orders without delay. For that reason, we offer fast delivery for orders within the United States. With us, you don’t have to wait for a moment longer for your HVACR components to arrive.


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Greatstone International Ltd. is a wholesale division of Goldstone HVACR Inc.
We have served wholesalers and factories in the HVACR industry for decades.

We are dedicated professionals in engineering, and we strive to be part of our clients’ future, as well as the future growth of the B2B online marketplace. As such, we are committed to innovation both in our products and how they are sold and distributed to provide an ever-improving experience to our clients.


All too often, B2B product and service provider sites are created without taking into consideration the needs of the customers. As a result, this leads to a complicated ordering process and unreliable delivery service. But with Greatstone International Ltd., you don’t have to worry about that. At Greatstone International Ltd., we not only provide in-house tested products that are created to industry-leading standards, but we also care about your total online marketplace experience. For that reason, when you choose eHVACR, you can expect:


Industry-leading quality HVACR products


Competitive international pricing


Professional and experienced services


Efficient online B2B shopping experience


First-class customer support and service


Let’s Crack Those Questions

Q: Do your products meet industry standards?

It is of the utmost importance to us that we provide only the best products and services to our clients. That’s why we always make sure that our products meet the industry standards like cULus, cRUus, UL, ETL, and more.

Q: How is the quality of the products guaranteed?

We guarantee the quality of our products by having a dedicated testing department. The testing department will check and test every product on its size, appearance, and performance. This process ensures that only the products of the highest quality will be sold on our website.

Q: Where are your products manufactured?

Our products are primarily manufactured in China, Canada, and the United States of America.

Q: Do you accept product customization?

Yes, we provide a range of customization options so that we can meet your unique product specifications.

Q: What is the warranty on your products?

At Greatstone International Ltd., we provide a warranty only to the goods sold, supplied, and delivered to the buyer. All other warranties are those of the relevant manufacturers of the goods. Greatstone International Ltd. supplies the buyer with any warranty provided by our suppliers and by the manufacturer.

Q: Why can’t I see the prices of your products?

You’re probably not logged in yet, or you’re still waiting for your account to be approved.

Q: What is the cut-off time for placing orders online?

Orders have to be placed before 4 pm EST so as to ensure that they will be shipped as soon as the products are available at our warehouse. If you place your order after 4 pm, you might have to wait a little longer for your order to arrive.

Q: When will my package arrive?

It’s difficult to ascertain exactly when you will receive your order. That said, we offer fast delivery for products in the U.S., so you can expect your order to arrive in just a few days.

Q: How do I contact you if I want to ask more questions?

If you want to reach out to us, you can choose to call us (1-866-508-0303), fax us (1-519-448-4884), or email us at