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Closeup of man changing furnace filter

Why Is My Furnace Blowing Cold Air?

Posted on: September 30, 2025

There’s nothing more frustrating than expecting a wave of warmth on a frigid Pennsylvania morning only to feel a blast of cold air instead. Whether you live near Rittenhouse Square, in the historic streets of Old City, or along the Schuylkill River Trail, reliable heat is essential for comfort, energy efficiency, and peace of mind. […]

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image of heat pumps

How Do Heat Pumps Work?

Posted on: August 27, 2025

How Do Heat Pumps Work? Looking for an energy-efficient way to both heat and cool your home? A heat pump could be the perfect solution. These systems don’t generate heat the way a furnace does—they transfer it, making them a smart choice for homes in Pennsylvania’s four-season climate. Here’s how they work. What Is a […]

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HVAC technician maintaining an air conditioner

What Are the Most Common Questions About Air Conditioning?

Posted on: May 29, 2025

When the summer heat hits, having a reliable AC system matters more than ever. Whether you live in Pennsylvania or Delaware, you want your home to stay cool without surprises. But with so many options and terms like ductless mini-split or central air system floating around, it’s easy to feel overwhelmed. That’s why we’ve compiled […]

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Len The Plumber Heating & Air technician and homeowner sitting and talking at a kitchen table

How To Choose a Heating & Air Conditioning System

Posted on: April 17, 2025

Installing a new heating and air conditioning system can be a major investment, so it’s important to choose your equipment wisely. Some HVAC systems perform better than others in Pennsylvania and the Delaware Valley’s cold winters and hot, humid summers. This guide will help you determine the best options for your home. Understand Your Home’s […]

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Close up of woman hand pulling paper roll from holder

Is Charmin Toilet Paper Septic Safe?

Posted on: April 4, 2025

Septic systems rely on gravity to move waste from your home to the septic tank and to separate solids from liquids for storage within the tank. Materials that are too thick or that don’t dissolve rapidly can interfere with this process, causing sewer backups, clogs, or even septic system failures. That’s why some plumbers and […]

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Sump pump installation in Philadelphia home by Len The Plumber.

How To Prepare Your Plumbing for Spring

Posted on: March 24, 2025

After the intense cold of Pennsylvania and Delaware’s winters, homeowners could have hidden plumbing damage. To prepare your home for spring, it’s important to thoroughly inspect your plumbing system and schedule any necessary repairs or maintenance. This ensures that everything from your toilets to the sump pump is in reliable condition and ready for regular […]

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Woman on her couch in a hat and blanket in her cold house

How Quickly Should a Furnace Heat a House?

Posted on: February 28, 2025

Winter in Pennsylvania and the Delaware Valley can be harsh, with freezing temperatures and brutal wind chills. When you turn up your thermostat, you expect your furnace to heat your home quickly. But if your house takes forever to heat up, you might wonder if something is wrong. How long should it actually take? A […]

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Technician installing a residential boiler

Are Boilers Recommended for Home Heating in Delaware?

Posted on: January 29, 2025

Winters in Delaware typically hover between 25 and 45 degrees Fahrenheit, leaving homeowners needing reliable and powerful heating systems to prevent damage from below-freezing temperatures. Boilers are a great option for consistent and comfortable heating in Delaware, as they’re especially effective in cold climates. They offer greater durability and longevity, making them an excellent investment […]

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A home high efficiency furnace in a basement

How Long Does a Furnace Last in Pennsylvania?

Posted on: January 21, 2025

With significant snowfall and freezing temperatures in the Pennsylvania winter, it’s important to ensure you have a reliable HVAC system to protect your comfort and safety. When your heating unit is on its last legs, you risk being stuck without sufficient heat during a sudden cold snap. That’s why it’s critical to replace your system […]

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Closeup of a man scratching his arm

Indoor Air Quality: Scratching the Surface on What Causes Dry Air in Your Home

Posted on: January 13, 2025

What do itchy skin, dry eyes, and static electricity have in common? They are all common signs that your home’s indoor air is too dry. Dry air occurs in your home when the relative humidity drops below 30%. However, there are signs of dry indoor air, and you can take action to mitigate this issue. […]

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From Len The Plumber Heating & Air
Experienced
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Our local team of 120 technicians has skills you can trust and provide the care you deserve.

High-Quality
Experience

We aim to keep our customers’ lives moving, which means we provide thorough and attentive service every time.

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Services

Minimize stress and maximize convenience with our one-stop shop for HVAC and plumbing services.

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& Reliability

No matter when you need us, we’re here for you with same day and emergency services you can depend on.

Upfront Pricing

We ensure you know the cost before work begins and don’t charge extra for evening, weekend, or overtime service.