Inside Sales Representative

Let's unpack this – Who are we?
mSupply is the leading provider of premium solutions, parts, and equipment for professionals serving customers on their appliance parts, HVAC, plumbing, and commercial kitchen needs. Headquartered in St. Louis, Missouri, mSupply is a multi-billion-dollar enterprise operating out of more than 200 locations throughout North America. Offering unparalleled product breadth, expertise across our national footprint, and ease of doing business through leading-edge technology, servicers prefer mSupply because we amplify what they do best: taking great care of their clients with speed, reliability, and accuracy. Learn more about MSupply at 

About Marks Supply
Since 1962, Marks Supply has provided top-quality HVAC, hydronics, PVF and plumbing products to customers in Ontario with a level of service recognized throughout the industry as exceptional. From OEM equipment to replacement parts to value-added support, Marks carries trusted brands such as American Standard and Ameristar. For more information, visit

Job Summary
We are seeking a motivated and technically skilled Inside Sales Representative to join our team in the HVAC and Plumbing sector. The ideal candidate will support customers, contractors, and distributors by providing quotes, processing orders, recommending solutions, and delivering outstanding customer service. This role requires a strong combination of product knowledge, sales acumen, and communication skills to drive revenue growth and ensure customer satisfaction.

Duties & Responsibilities

• Manage inbound sales inquiries via phone, email, and CRM system.
• Provide accurate and timely quotes, proposals, and pricing to customers and contractors.
• Process purchase orders and coordinate with operations to ensure timely delivery.
• Develop strong customer relationships by acting as a trusted advisor for HVAC and plumbing solutions.
• Cross-sell and upsell complementary products (e.g., filters, fittings, accessories).
• Assist customers in product selection by interpreting specifications, drawings, and technical requirements.
• Collaborate with outside sales representatives and manufacturers to close deals.
• Maintain accurate records of sales activities, pipeline opportunities, and customer interactions in the CRM.
• Stay informed on new products, industry regulations, and seasonal market trends.
• Proven experience in inside sales, customer service, or technical support (preferably in HVAC, plumbing, or building materials).
• Strong technical aptitude with the ability to learn HVAC and plumbing product lines quickly.
• Excellent communication and negotiation skills, with a customer-first mindset.
• Proficiency in CRM and ERP systems (Salesforce, HubSpot, Epicor, Infor, or similar).
• Ability to read and understand technical documents, spec sheets, and product catalogs.
• Highly organized with attention to detail and the ability to manage multiple priorities.
• Prior experience supporting contractors, distributors, or facility managers.
• Knowledge of HVAC systems (split units, VRF, chillers, boilers) and plumbing systems (piping, pumps, fixtures).
• Familiarity with quoting software and supply chain/logistics processes

Qualifications

• Bachelor's degree in business, Construction Management, or related field (or equivalent experience).
• 3 or more years experience in sales or business to business selling role.
• 3 or more years' experience with HVAC.
• Demonstrated knowledge of MS Office suite applications (Word, Excel, PowerPoint, Outlook).
• Proficient in using office technology, including computers, photocopiers, scanners, phone systems, and virtual meeting platforms, as required for daily responsibilities. Aptitude for mathematical operations and numerical analysis.

Physical Demands & Work Environment

• This full-time position requires approximately 40 hours per week and including regular physical and sensory activity, including:
• Bending, lifting, and carrying materials weighing up to 50 lbs.
• Prolonged sitting (up to 8 hours), with intermittent standing and walking throughout the shift
• Continuous use of fingers, hands, and arms for computer and office-related tasks
• Frequent use of office equipment such as computers, phones, and scanners (up to 8 hours daily)
• Regular verbal communication via phone and in-person interactions (up to 6 hours daily

What We Offer
We care about your well-being from day one. Here's a snapshot of the benefits we provide:

• Comprehensive health benefits, 100% paid by the company – extended health coverage, dental, vision, and prescription drugs, effective on your first day
• Life insurance, plus short- and long-term disability coverage
• Paid time off – vacation, holidays, and personal days
• Employee Assistance Program (EAP); Employee discounts, and much more…

mSupply is an equal opportunity employer. We are committed to providing accommodation for people with disabilities. If you require accommodation during the application process, please contact