Best Oil Boilers Review 2020 – Buyer’s Guide

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Oil Boilers Review

LAST UPDATED: September 24th, 2020

Boilers use various sources of energy to power them and one of them is oil. The best oil boiler will keep your home warm during a cold season.

They are one of the heating systems found in many homes and businesses

An oil boiler uses oil to heat water. Water is converted into steam which flows to the radiant heating system or radiators ultimately warming your rooms.

Best Oil Boilers

Metal steam radiators are positioned along walls etc. to provide comfortable and consistent heat. 

Best oil boilers Comparison 2020

Last update on 2020-10-26 / Affiliate links / Images from Amazon Product Advertising API

High-efficiency oil boiler reviews

#1. Eliminator Shop and Garage Waste Oil Heater

  • It is designed with a dependable stainless steel fuel pump
  • It is a boiler by eliminator
  • It burns different kinds of oil. They include vegetable oil, waste oil, and transmission fluid, just to name a few.
  • Has a remote thermostat
  • It produces clean and comfortable heat
  • It features a control box which has indicator lights and circuit board
Eliminator Shop and Garage Waste Oil Heater, Model Number AENH-001

Performance

This is not your typical oil boiler. It is able to burn different kinds of oil such as waste oil, vegetable oil, transmission fluid and many more. 

Saves money

No need to get rid of waste oil thus saves you money. If you are planning to use vegetable oil that was previously used to fry food, remove any particles of food with a strainer.

 It burns up to 4/5 of a gallon of oil per hour.

It can be used to heat your home, shop, garage or office. 

Self-contained unit

This is a High-efficiency oil boiler by eliminator. It comes with a dependable stainless steel fuel pump, a thermostat, and a control box with indicator lights and circuit board. 

The pump is made of steel; a strong and durable metal. 

Maintenance

It has the expected maintenance such as cleaning the burning pan. It does not synthetic oil. Some users reported that not much heat will be produced with this kind of oil.

Check related guide Electric Boiler vs Gas Boiler.

#2. WTGO-4 126,000 BTU Output Gold Oil Boiler w/Tankless Heater

  • It is an oil-fired water boiler
  • Has cast iron sections
  • Has a quick open top
  • It is a product of Weil-McLain
  • Features 2 flue outlets
  • Features a Full swing-away burner door
  • Features a temperature/pressure gauge
WTGO-4 126,000 BTU Output Gold Oil Boiler w/Tankless Heater

Weil-McLain

The top Oil fired boilers are great solutions for residential and commercial applications. 

Weil-McLain is a renowned brand in the industry of boilers. It produces reliable boilers that produce more heat per BTU than a standard gas-fueled system. It can serve both single-family homes to large scale apartment complexes. 

Performance

Whatever your needs are, Weil McLain offers a broad spectrum of oil-fired boilers that delivers high energy efficiency, cost savings, and system flexibility. It features 2 flue outlets for venting flexibility. 

Design

It has a swing-away door and a quick open door for easy inspection. Other crucial parts of this boiler include burner disconnect plug, circulator, water relief valve, low water cut off and burner primary control.

#3. Burnham MST MegaSteam 3-Stage Oil Fired Boiler

  • It’s a boiler by Burnham
  • It is a cast-iron boiler
  • Features a unique 3 pass heat exchanger for exceptional efficient
Burnham MST MegaSteam 3-Stage Oil Fired Boiler

Brand

Burnham LLC is one of the leading manufacturers of boilers. It was established in 1873 in England. It produces versatile and high-efficiency boilers.

Cast iron Boiler

This type of heating system offers a long service life. Cast iron is known for its durability hence is suitable for homeowners that are looking for years of worry-free performance and comfort.

Performance

It is rated as one of the most efficient heating systems in the world. It achieves efficiencies up to 86% with a 3 pass cast iron heat exchanger.  This makes it corrosion resistant. 

With high efficiency, it will provide increased energy thus saving on your fuel bills.

#4. Weil-McLain WGO Gold Series Cast Iron Oil Boiler Less Coil And Burner

  • Has cast iron sections
  • Has an insulated steel jacket to prevent loss of heat
  • Features quick open top and swing-away door for easy inspection
  • It is made with a convertible flue
  • Recessed target wall design protects the unit from flue brushes
  • It is a product of Weil-McLain
  • Features a balanced draft damper
  • Has a built-in air separator
  • Has a refractory combustion chamber
  • Has 2 flue outlets
Weil-McLain WGO Gold Series Cast Iron Oil Boiler

Simple to inspect and service

Inspecting and servicing a Weil-McLain WGO Gold Series Cast Iron Oil Boiler is simple. It is designed with a quick open cover and a swing-away door for quick inspection and servicing. 

Design

It is designed with 2 flue outlets. One of the top and the other on the rear. This ensures the unit is suited for a variety of installation conditions. The recessed target wall design is to protect the boiler from flue brushes when you are cleaning it.

Performance

It is one of the Best oil boilers for home heating due to its high performance. Preservation of energy is important with a heating system. This unit is designed with an insulated steel jacket to prevent heat loss thus preventing heat escaping and this improves its efficiency. 

This product has no burner.

#5. Crown Boiler Company Twz004wcz3sh Oil-Fired Hot Water Boiler

  • It’s a heating system by Crown Boiler Company
  • Has cast iron sections
  • It maximum operating pressure is 50 PSI
  • It is an oil-fired hot water boiler
  • Does not have a burner
  • Its efficiency is 84%
CROWN BOILER COMPANY TWZ004WCZ3SH

Type

This is a cast iron, oil fired boiler. Cast iron is used for most heating systems because of its efficient heat transfer capabilities and durability. 

Performance

 Its design combined with a high-quality heat exchanger surface ensures economical energy consumption and long service life. If you are seeking optimal efficiency, buy this unit. Its efficiency is 84% making sure your home is warm all the time during winter.

Brand

It is a heating system by the Crown boiler. This company was incorporated in 1958 and first started dealing with heating products such as cast iron radiation, oil burners, and operating controls. 

Later it grew and by 1990 it was a national company supplying boilers throughout the Northern United States.

#6. CGt – 133,000 BTU – Hot Water Combi Boiler

  • This is a hot water combi boiler by Weil McLain
  • It features high-grade stainless steel burners
  • Its efficiency is 82%
  • It has a built-in tankless heater as standard equipment
CGt - 133,000 BTU - Hot Water Combi Boiler

Brand

It is a product of Weil McLain. This company manufactures boilers that use various sources of energy such as oil and gas. It can be used for your home, shop, garage or various facilities that need heating.

Features

It will provide your home with endless hot water and room heating. A combination or combi boiler is an ingenious space-saving idea popular choice in many homes.

I would recommend this type of heating system because it is compact, convenient and efficient. With high efficiency, you will save significantly on your heating bills per year. 

Compact Size

With its compact size, you will be able to discard your bulky water tank. CGT combi boiler will require less space for storage such as kitchen cupboard. Because it is all in 1 unit, it is easy to install.

#7. Slantfin Liberty Hot Water Oil Boiler without Coil

  • It’s a product of Slantfin
  • Fuel: oil fired
  • System: Hot water
  • Ideal for small and large spaces of up to 3,000 sq.ft
  • CSA listed for improved safety
Slantfin Liberty Hot Water Oil Boiler

Features

This cast iron boiler comes with features that make it easy to install and service. It comes with a door that is large enough to allow easier cleanout and servicing. 

Brands

It’s a product of Slantfin. It was founded in 1949 and grew to become a nationally known company for boilers and baseboards for high performance and long-lasting quality. 

Factors to consider when buying the Oil boilers 2020

Are you looking for a new boiler? Invest a little more time and effort in researching the right heating system for your home. Otherwise, you will end up with a boiler that is too big, small or is not powerful enough to heat your house.

The first step is choosing your boiler type. 

Types of Oil fired Boilers

An oil boiler is one of the most important appliances in the home. It provides heating and hot water. 

It is worth noting that there are various types of oil boilers. They include system, combi, and regular oil boilers. All these cater to various user requirements and preferences. 

Combi boiler

This is a space-saving unit. It is suitable for people who want a smaller boiler that does not take much space in their home. This is possible because it does not require hot water cylinders as water is taken directly from the mains. 

Some of them can fit in a kitchen cupboard because they are small. It does not need a cold water tank. With this type of oil boiler, heating and hot water are on-demand. This type of boiler saves significantly on energy as there is not constant heating or supply of hot water. 

Regular

They are also known as conventional boilers.  They are commonly found in older and larger properties. They are also installed in modern homes where there is a huge demand for heating or hot water. They require a hot water cylinder and cold storage tank

System 

This is a type of system that makes use of a hot water cylinder. Therefore, there is hot water when you need it. However, it does not use water tanks.

Size

It is important that you get the right-sized boiler. This ensures you get adequate heating. Buying a boiler that is too large for your home will just increase your operating costs. In other words, oversized boilers waste fuel as excess heat will just be lost. Also, oversizing a system can significantly reduce its efficiency. Small heating systems can leave you cold when you need it the most. It is important that you understand your home heating needs before buying one.

Efficiency

A highly efficient boiler will enable you to save money on energy bills. Look for a high-efficiency rating. Combustion systems are rated with an annual fuel utilization efficiency or AFUE. 

Higher is better. Going from the minimum AFUE of 84% to Energy star’s 87% will save 3.5% in fuel every year. That might not sound like a lot but when you consider that the oil boiler will be used for the next 20 to 30 years, the savings can really add up. 

Direct Vent

This is also known as sealed combustion. This type of boilers does not use room air. Instead, they take it from the outside through a double-walled pipe which is also used to expel waste gases. Most of these systems that use a direct vent don’t need a chimney. This will save the cost of realigning an old chimney. Taking air from the room can increase operating costs and risks of fumes coming back into the house.

Frequently Asked Questions about oil boilers for home heating

oil boilers for home heating
What is an oil boiler?

This is a heating system that uses oil for heating. If your home does not have a connection to the gas network, use an oil-powered boiler. It will keep your property as warm as you would want it.
The essential basic components of these systems include the following;

-Pressure and temperature gauge
-Furnace control
-Heat exchanger
-Relief valve
-Combustion blowers
-fuel pump
-Burner assembly
-vent openings, just to name a few.

How does a fired boiler work?

Many homes and shops use oil-fired boilers for heating. They distribute heat in 3 ways.
-Hot water through baseboards
-Warm air through vents
-Steam through radiators
This heating system can sense when the room temperature is fallen below your thermostat setting. The oil boiler needs oil to heat water. The hot water is then distributed around the house to radiators which heat up the house. 
It is worth noting that oil is ignited in the combustion chamber. The hot water can also be used in your showers and taps.

What is the cost of an oil boiler?

Are you looking for a heating system but are unsure about cost? Boilers’ prices vary depending on their brand, type, model and size. They cost from $2000 to $3000. As a rule of thumb, the larger the size of the boiler, the more costly it will be.
Usually, small homes require small boilers and the vice versa is true.

Price is also affected by the type of oil boiler you will get. There are 3 types of oil boilers. Combi, system and regular. Combi is a bit affordable because they are smaller and do not require hot water cylinders to operate. High quality, easy to use and high-efficiency boilers tend to be a bit expensive but are the best for heating your home. 

What are the qualities of the best oil boilers?

Start saving on your fuel bill by buying a boiler with high efficiency. The best heating system has very high efficiency. Buy a boiler that uses a closed combustion system. They do not use room air hence are safe.
The best systems have an outdoor sensor and thermostatic valves. They will perform better if they have these types of control. Some come with a smartphone app to remotely control the temperatures of the room.

What oil is used for oil boilers?

Have you ever wondered what type of oil is used for oil boilers? The different types of heating oil include kerosene, gas oil, Glenburn kerosene, and furnace fuel. Gas oil, also known as red diesel is mostly used commercially.
Kerosene is commonly used in home heating. It is affordable and lighter. Kleenburn kerosene is a less polluting oil hence is a lot safer for the environment. 
Furnace oil is primarily used for commercial purposes. Kerosene is the most preferred oil because it is affordable, light and burns cleanly. It is also readily available. 

How long do oil boilers last?

High-quality oil boilers should last up to 15 years. Most of them have cast iron sections which makes them durable. Cast iron is known for durability which makes it suitable for homeowners looking for years of worry-free performance. 
Apart from quality, the longevity of a heating system can also depend on how well you will look after it. Regular servicing once a year will ensure it stays in good working order. 
Check Pressure
Various parts of the boiler such as heat exchanger, combustions chamber will be checked to make sure it is operating at the right pressure. If it is not working at the correct pressure, it will not heat your home well.
Normal pressure is 1 to 1.5 bar and one can see on the pressure gauge. 
 Some worn out parts will be replaced and dirty components will be replaced.
This will help avoid bigger problems and of course, will save you money down the line. 
Safety
Regular servicing is also extremely important for your safety of you and your family. Carbon monoxide leaks can be checked and fixed if there is any. Always monitor for unusual changes and arrange for repairs as soon as possible if you notice some changes.

When Should You Replace Your Boiler?

It is easy to tell if your boiler needs replacing. If your boiler has approached 10 to 15 years, is not performing and has completely broken down, consider replacing it. Through regular servicing will keep your system strong, it will wear out eventually.
You can also replace your boiler even if it is still running. Do not wait until when it is really cold and your boiler has broken down for you to replace it.  Here are signs to know if it needs replacement:  
Age: Boilers can last10 to 20 years if you have done a good job of keeping it in good shape. 
High Energy Expenses: It is time to replace your heating system if you are paying a lot of heating bills than usual. As a boiler grows older, it will start to lose its efficiency and use more energy. 
Consider replacing it to save money on your energy bill. If it is also taking time to heat your home, consider replacing it. This means it is not working properly. It is the right decision to make especially if you have done several repairs and there is no significant change.
Needs a lot of repairs: too many repairs indicates your boiler is nearing the end of its lifespan. Repairing often is expensive and this will outweigh the cost of purchasing a new boiler.
The frequency of failures is also a good indication that your heating system needs to be replaced. Do not wait until it is winter for you to replace it. You deserve a high-quality, better performing oil boiler.
No replacement parts: Boiler technology is advancing fast hence it can be hard to get replacement parts for your old boiler. If you are waiting weeks and months before getting a replacement part, it is the right time to purchase a new boiler. 
Buy a new heating system if you start to hear a lot of funny noises coming from your old one. With an old boiler, different components have a hard time working well and can start to produce popping, cranky or hissing sounds.

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