Serving Waltham & Surrounding Areas

Your Home Stays Warm. We Make Sure of It.

Fast, reliable heating oil delivery and expert furnace repair when you need it most. No surprises — just honest service from your neighbors in Waltham.

Call Now Our Services

Licensed & Insured

For your protection

Same-Day Service

When you need us

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What We Do

Complete Heating Solutions

From emergency repairs to scheduled maintenance, we keep your home comfortable all year round.

Heating Oil Delivery

Reliable, on-time delivery of premium heating oil straight to your tank. We monitor your levels and schedule deliveries before you run low.

Furnace Repair

Quick diagnostics and expert repair for all furnace makes and models. Emergency service available when the heat goes out unexpectedly.

System Maintenance

Preventive tune-ups that extend equipment life, improve efficiency, and catch problems before they become costly breakdowns.

Emergency Service

Heating failure at midnight? We offer responsive emergency call-out service to get your heat back on fast, even on weekends and holidays.

Residential Heating

Specialized in home heating systems. We understand the unique needs of Waltham homes and provide tailored solutions for lasting comfort.

New Installations

Looking to replace an old system? We'll help you choose the right high-efficiency unit and handle professional installation from start to finish.

Local

Waltham-Based

About Us

Your Neighbors in Heating

Valiant Oil Co Inc has been a trusted name in Waltham's home heating industry. Based right here on Elm Street, we know this community and the challenges our customers face — especially during New England's harshest winters.

We're not a national chain with call centers halfway across the country. When you call us, you reach real people who care about getting your heat back on and keeping it running efficiently. Our reputation is built on showing up when we say we will, doing the job right, and treating your home like our own.

24/7

Emergency Service

Fast

Response Time

Honest

Pricing

Why Choose Us

Built on Trust, Driven by Service

Here's what sets Valiant Oil apart from the rest.

No Hidden Fees, Ever

We provide clear, upfront pricing before any work begins. What we quote is what you pay — no surprise charges, no add-ons you didn't agree to.

Always On Time

We respect your schedule. Whether it's a scheduled delivery or an emergency call, we show up when we promise — and we call ahead.

Local & Responsive

We live and work in Waltham. That means we can reach your home quickly and we're invested in keeping our neighbors comfortable.

Quality Guaranteed

We use only premium heating oil and perform thorough diagnostics on every repair. Your comfort and safety are non-negotiable.

Get in Touch

Let's Keep You Warm

Whether you need a delivery, a repair, or just have questions about your heating system, we're here to help. Reach out — we respond fast.

Phone

(781) 891-1000

Address

30 Elm St, Waltham 02453-5360

Business Hours

Mon–Fri: 8:00 AM – 5:00 PM

Emergency service available 24/7

Send Us a Message

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